Design To Accomodate Entity Based Schema Versioning
Jul 20, 2005
in simple words it's about versioning at record level.
Example
TableEmployee - EmployeeId, EmployeeName,
EmployeeAddress, DepartmentId,
TableDesignationMap - EmployeeId, DesignationId, EffectiveDate,
validity
TableDepartment - DepartmentId, Department
TableDesignation - DesignationId, designation
Via Modify-Employee-Details screen following are editable
EmoyeeName
EmployeeAddress
Department
Designation
this screen should allow user to navigate through changes history.
Example :
Version -1
EmoyeeName John Smith
EmployeeAddress 60 NewYork
Department Accounts
Designation Accountant
Version -2
EmoyeeName John Smith
EmployeeAddress 60 NewYork
Department Accounts
Designation Chief Accountant - changed
Version -3
EmoyeeName John Smith
EmployeeAddress 60 NewYork
Department Sales - changed
Designation Marketing Manager - changed
Question :
What is the best proposed database design for maintaining history
records bound with version and retrieval technique
Best Regards
Sasanka
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Jul 3, 2007
I need to design a schema that will provide me a hierarchical view in reporting. I mean by this is, lets say:
Hospital
|_________> Hospital Entity
| | |
| | V
| | Clinic A
| | - Jane Doe MD
| | - Janette Brown MD
| | ACME Clinic
| | - Jennifer Smith MD
| | Clinic of Jennifer Smith MD
| | - Jennifer Smith MD
| | - Billy Johnson MD
| |
| V
| - Earl Brown MD (Hospital Entity Resident Practitioner)
| - Janette Brown MD
V
- John Smith MD
- Bob Jones MD
The design should also allow me to query a practitioner and the query will show all the entities he or she is a member of.
If this is not the correct place to post this posting, please let me know the correct place and I will make the necessary changes.
Thanks,
Stephen
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Oct 28, 2014
I have an entity (A), in which I use domain based attribute. The second entity (B) has several attributes. My problem is that, I would like to filter the first entity (A) based on an attribute that belongs to the second entity. The only way I can filter it (in MDS Excel add-in or Explorer) is by using Code or Name from the second entity.
I have in mind a couple of solutions, but they require some coding with xml saved query from Excel.
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May 8, 2007
I am trying to create an opportunity report that includes notes from the notes entity. Unfortunatly, when I pull the fields from the notes entity into my reports, it seems there is no way to tie the notes to specific opportunities or accounts that they are associated with and I get all notes under the first item listed on my report. Is there a way to link data sets like Access lets you link tables?
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May 12, 2015
Using MDS 2012: I have an entity "XYZ_Entity". In "XYZ_Entity" entity I have 2 domain based Columns "DealerGroup" and "Dealer".
While inserting information into "XYZ_Entity" entity user can select the required dealer group from domain base Dealer Group values. Now for selecting Dealer he wants the dealers to be filter based on selected dealer group and he can select from the filtered list. reason to do that is he don't want to go through thousands of dealers and select an incorrect one.
Is it possible, if yes then how?
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Mar 26, 2004
Let me explain what I'm trying to do and see if I can get any suggestions. I have some tables in a database to track "Required Reading" so that users who login must read documents by a certain date.
My first idea was to have a table called Reading that would store each UserID and every DocID from the Documents table. Then when the User logged in I would do a SELECT * FROM Reading WHERE UserID = 'User1' to filter down to all of the documents for the current user. So if I have 10 users and 10 documents then I would have 100 records in the Reading table.
The only problem with that is that every user logged in would have the Reading table open at the same time but no two users should ever be editing the same record. The user would have an exclusive recordset based on his UserID. I just don't know if this would cause a conflict.
Documents
-----------------
DocID nvarchar(16) (PrimaryKey)
Revision nvarchar(8)
RevisionDate smalldatetime
DueDate smalldatetime
Reading
----------------
UserID nvarchar(16) (PrimaryKey)
DocID nvarchar(16) (PrimaryKey)
Read bit
ReadDate smalldatetime
The second idea is to have the same Documents table but when a user logs in, create them a unique table. So if User1 logs in I would check to see if a User1 table exists and if not create it. The same for User2 etc.
User1
------------------
DocID nvarchar(16) (PrimaryKey)
Read bit
ReadDate smalldatetime
User2
------------------
DocID nvarchar(16) (PrimaryKey)
Read bit
ReadDate smalldatetime
Which would be a better schema design?
What would be the best way to index the tables?
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Mar 10, 2008
Hi All,
Can you tell me how to represent the problem below?
I want to be able to store different types of information for products in different categories.
So Category A maybe TV's and category B maybe Sofa's and Cateogry C maybe Car. There will however be some common data.
So for a TV I may want to store screen size etc.. and for a Sofa if its leather and for cars maybe whethers its a Saloon, 4x4 etc.. The common data maybe Manufacturer, Price etc..Obviousely each peice of info will be of a different data type.
How best do I represent this in a database because I will have lots of categories of products and the products will be used for filtering too. So I need to create a solution which is not too costly on performance.
To give you an example of what I'm intending on doing..lets look at desktop computers which will have the following product specific info to filter on:
http://computing.kelkoo.co.uk/ctl/do/compareProducts?back=%2Fc-111801-desktop-computers.html&catId=111801&pid1=18445816&pid2=12461415
and for TV's we have
http://audiovisual.kelkoo.co.uk/ctl/do/compareProducts?back=%2Fc-100311823-lcd-tvs.html&catId=100311823&pid1=18052959&pid2=18704336
or
http://shopcompare.eu/ash/search.php?phrase=GPS
and
http://shopcompare.eu/ash/search.php?phrase=palmtops&cid=28
Thanks in advance, any guidance even to any online tutorial would be appreciated.
Gaj-It.com - Gadget News
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Aug 15, 2007
I wonder instead of just brainstorming, there probably isa very standard and a simple way to do database schema design.let's say we are doing a website. the user can go overand type in the movie name and zipcode, and the websitewill return all the theaters showing that movie and at whattime, for theaters in THAT zipcode only (for simplicity).so how do we just start and use a standard method thatcan be simple and very accurate to ensure good tables design?
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Jul 14, 2005
QUESTIONs:What schema is the best for high speed search for a classified web application?
Is our schema design looks OK? It is a STAR schema and will be used for OLTP type app. Is this OK? or Are we missing something? Please let me know if you need more diagramatic description.
BACKGROUND:Our group is making a classified website (like classified.yahoo.com) where people can place online ad to sell items. like cars, computers, electronics etc. Users will fill out webform for each category(car or computers) with all attributes of the item forsell to post an add.
Main 3 operations the web users will perform: Quick Searching(most frequent): category=car, subcategory=sedan, country=USA city=LosAngeles Zip=empty
Advanced Search(less frequent): User can include all fieldsattributes or then can user a subset to query to do advanced search like :
category=car, subcategory=sedan, country=USA, city=Los Angeles, Year= in(00, 03), transmission=Auto, engine=V6, Maker=Honda, Model=Accord, color=Red and Price < 10000
category=car, subcategory=SUV, country=USA, city=NY, Year= in(99, 00, 03), transmission=Auto, Maker=Toyota, and Price between 11000 and 14500
Insert(least frequent): By filling out web form. For Car, the form will have different dimensionsattributes (year, make, model, transmission, mileage, color, price etc)
Current Schema design: Set of core dimensionlookup tables: stores corecommon attributes for lookups eg. status={open, new, expired}, country={USA, Canada, India,...}
One custom Lookup table: for all custom attribute lookup: transmission{auto, manual}, engine type{V4, V6} for car, processor{PII, PIII, PIV), RAM(512MB, 1GB, 2GB} for Computer & so
3 Fact Tables: Main factPivot table that stores all sell common attributes eg. price, title, year_made, post_date, expire_date, user_name, description etc. One fact table to store custom string, int, float, date field values of ads. One fact table to store custom dropdown field selection values
Concerns and issues: Looking at the schema, it seems to be a STAR schema with multiple fact tables where all core lookup tables connected to the main Pivot table and custom lookup table connected to the 2nd and 3rd fact table.
Quick search only queries the Pivot fact table. While Advanced search query requires to join 3 fact tables. Both query requires to join 3 fact tables with all dimension tables(15 to 20 each having avg of 20 values) to get the look up names so that users sees text instead of ids. Search speed is the Main concerns. Insertionupdate speed doesn't matter that much as that is less frequently done.
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Feb 10, 2006
Here is the current schema.
product_category
- product_category_id
- other fields, ...
product
- product_id
- product_category_id
- ....other fields
Now, for each product type, it has a distinct set of specifications. For example: Books type, will have author, publisher, pages, etc. Apparels type will have color, size, materials, etc. I don't think I can put all those specifications into one table - the product table above.
How to design the schema to store product specifications? Should I create a separate spec table for each product type, such as book_product_spec, apparel_product_spec, electronics_product_spec, etc.? Please advise. Thanks.
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Mar 9, 2007
Hello, we have some tables and views that are not assigned to the standard schema of dbo.Whenever I try to use a design time control and/or SQLDataSource connection control, it does not like objects other than those using the dbo. schema.Any ideas on how to resolve this issue?For example, her are a couple of views:dbo.vwCustomersdbo.vwCustomerDetailsord.vwOrdersord.vwOrderDetailsthe views with dbo.* I have no problem with.the views with ord. it tells me the view(s) do not exist.Thanks in advance!
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Oct 13, 2015
I'm using SQL Server 2008 R2 Management Studio. I have a view that I'd like to index. Obviously, that requires that the view be schema bound to the underlying table. I have found myriad explanations for how to programmatically create a schema bound view, but I've never created a view like that before, and since I'm more a mechanical engineer than a database manager, I'd like to be able to do it the 'easy' way, by just creating the view in Management Studio by going to the database, right clicking on 'Views', clicking on 'New View...' and then, hopefully, checking some box somewhere that schema binds the table to the view.
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Mar 7, 2006
Hi,
i have the following requirement
Can a stored procedure in SQL Server 2005 generate XML data based on the schema, We don't prefer to manually build an xml string inside the stored proc?
Is there any SQL Server 2005 feature to do it if possible?
i appreciate your help.
Thanks,
Vaishu
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Feb 17, 2012
Provided that we have 2 type of tables, the first type of tables with schema schema_a and the second type with schema schema_b.Also 2 filegroups apart from primary created: filegroup_a and filegroup_b.How can I configure so that when table with schema schema_a created, it can be put on filegroup filegroup_a automatically and when table with schema schema_b created, it can be put on filegroup filegroup_b automatically?
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Feb 13, 2008
This is an example of my data:
Col1 Col2 Col3
1 LONGDESCRIPTION1 111
1 LONGDESCRIPTION1 222
1 LONGDESCRIPTION1 333
1 LONGDESCRIPTION1 444
2 LONGDESCRIPTION2 XXX
2 LONGDESCRIPTION2 YYY
2 LONGDESCRIPTION2 XYZ
2 LONGDESCRIPTION2 999
This is an example of what I want my report to look like (ill put row numbers to help identify)
Col1 Col2 Col3 Row Num
1 LONGDESCRIPTION1 111 1
222 2
333 3
444 4
Subtotal Col3Sum (PAGEBREAK)
2 LONGDESCRIPTION2 XXX 5
YYY 6
XYZ 7
999 8
Subtotal Col3Sum
The Settings:
I'm currently using a single TABLE DETAIL ROW with HIDE DUPLICATES in Col1 and Col2.
The LONGDESCRIPTION field can be expected to take 2 row heights worth of space because it wont fit.
I've also got CAN INCREASE TO ACCOMODATE CONTENTS and CAN DECREASE TO ACCOMODATE CONTENTS selected.
The Problem:
When Printing/PrintPreviewing Page1, the Height of Rows 2/3/4 ARE THE CORRECT SIZE (only 1 row high, meaning that can decrease to accomodate contents works).
BUT when Printing/PrintPreviewing Page2, the Height of Rows 6/7/8 FOLLOW THE HEIGHT of ROW 5 (two rows high, meaning that can decrease to accomodate contents DOES NOT WORK).
Rows 2/3/4 has the same Row Height as Row 1 ONLY ON PAGES after Page1.
Rows 6/7/8 has the same Row Height as Row 5 ONLY ON PAGES after Page1.
Can decrease to accomodate contents does not seem to be working for Pages after page 1.
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Feb 26, 2007
Frank writes "Any suggestion on the best design to store data for resource management so that data can be displayed afterwards in something like a gantt chart.
For example, you have to asign resources, say personID 1 to 100 to fill positions A, B, C, D, E and F
A position must always be filled. A person can only fill one position at a time. You want to be able to detect overlaps when you do your planning.
So if person 2 is in position B from 1 Jan to 15 March, he is currently unavailable, but he should be availabe in my planning for any position from 16 March onwards etc.
Possible queries -
1) list all positions not filled during period XXXX to YYYY
2) List all persons available to fill a certain postion during period XXXX to YYYY
3) List any overlaps where a person is assigned to different postions during overlapping time frames..."
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Dec 13, 2006
Hi all,
I'm a beginner to Report Services, and have tons of questions.
Here's the first one:
if the reports are created based on the condition that the user selects, how can I create the reports with Report Services?
For example,
the user can select the fields that will be shown on the reports, as well as the group fields, the sort fields and restrict fields. So I would not be able to pre-create all possible reports and deploy them to the report server, and I think I should create the reports dynamicly based on what the user select.
Could someone tell me how to do it (create and deploy the reports)?
Thanks a million!
Jonee
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Nov 24, 2015
I created composite clustered index key based on Gender and Salary column
The Query executed Successfully and <g class="gr_ gr_135 gr-alert gr_tiny gr_spell undefined ContextualSpelling multiReplace" data-gr-id="135" id="135">i</g>
got composite index key id Gender(-), Salary I <g class="gr_ gr_310 gr-alert gr_gramm undefined Grammar only-ins replaceWithoutSep" data-gr-id="310" id="310">want</g> know why Gender(-) display like this?
And Gender is <g class="gr_ gr_391 gr-alert gr_spell undefined ContextualSpelling ins-del multiReplace" data-gr-id="391" id="391">nvarchar</g> (20)
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Oct 11, 2006
Hi There,This is related to a ms access database but since I use the SqlDataSource control I thought I should post here.I have a project that I was working on with this ms access db and using sql controls, everything was working just finesince one day I started getting "Object reference not set to an instance of an object" messages when I try to designa query or retrieve a schema, nothing works at design time anymore but at runtime everything is perfect, its a lotof work for me now to create columns,schemas and everything manually, I've tried reinstalling visualstudio, ado componentsbut nothing seems to fix it, did this ever happen to any of you guys?any tip is really appreciated thanks a lot
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Nov 16, 2007
I am cutting my teeth on star schema design. I have a simple star schema I am building for Headounct analysis at work. I have a factless fact table where a row represents a head in the company. Each head is toed to a particulat week in a Date dimension tabel. There are additional dimensions for things like gender, ethnicity, marital status, age, etc. Now in my department dimension - it's hierarchical. In the DimDepartmnet there is a department which belongs to a company. Comapnies belong to divisions. Now the fun part. Each division has a headcount target for each year. Up to this point I am in a perfect star schema (no snow flaking). How would I integrate in this concept of a headcount target for each division for a given year?
We are using cognos on top of this star schema to provide reporting and analysis services if that is relevant. From the Star Schema design stand point... any thoughts?
Christian Loris
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Sep 13, 2005
I’ve got a situation where the columns in a table we’re grabbing from a source database keep changing as we need more information from that database. As new columns are added to the source table, I would like to dynamically look for those new columns and add them to our local database’s schema if new ones exist. We’re dropping and creating our target db table each time right now based on a pre-defined known schema, but what we really want is to drop and recreate it based on a dynamic schema, and then import all of the records from the source table to ours.It looks like a starting point might be EXEC sp_columns_rowset 'tablename' and then creating some kind of dynamic SQL statement based on that. However, I'm hoping someone might have a resource that already handles this that they might be able to steer me towards.Sincerely,
Bryan Ax
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Jan 4, 2008
I've used the ADS sample program and it works well. I looked at the code and changed it to VB (sorry, I'm not biligual yet), and have tried to 'adjust' it so I can connect to a remote PC (XP running IIS) instead of the local PC using the workgroup information database (system.mdw). Any ideas of the connection string that could make the connection?..my intention is to RDA once a week between a mobile device (3g/gsm) and a 'poor man's' IIS web server.
I've tried everything I can think of, and I'm sure its possible since all I'm doing is changing the connection path.
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Jul 20, 2005
Dear friends,In the area of GIS (Geographic Information Systems) there is a featureknown as versioning (long transactions).This feature allows databases to maintain different versions of data,in a hierachycal structure, in order to do simulation (what if ...),historical snapshots, concurrent editing, etc.Each version can be reconciled with its parent version in any moment(merge-post changes).I have recently seen that Oracle supports this feature from version9i.I am very interested in knowing if SQL server will support thisfeature in future versions. Looking at SQL Server 2005 doc. I haven'tseen any related info.Thanks,Jerry
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Jun 12, 2007
I'm having problems to keep proper versioning control in place between the development and production environments. I'm running SQL2000 and we have hundreds of packages that runs daily. Some on shedules and some not.
Every time a package is saved, it creates a version in SQL Server. After development I want to be able to use something like "Visual Source Safe" and book the final version in that was moved into production. Something with a version number etc.
This is especially a problem if I want to roll back to a prior version of a package. I do not know which one of the 1000 versions to choose from that were created while developing the package.
Another problem is that I do not know if someone is working on a package if I want to work on it.
I can not run a search on all the packages to get a list of which tables/fields are used where to determine the impact of a program/database/design change that needs to be implemented.
Any suggestions would be helpfull.
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Jul 13, 2000
I have a big delimma. We are developing and application that requires parallel work to be done one different copies of databases at the same time. Then when one when group is done and ready to ship their bug fixes/features, the changes they make to the database and data have to be merge back into the baseline database.
Here's the specifics. 4 databases (that make up the product), 4 copies of the 4 database (one for each team).
I was thinking about using SQL DMO to attach to each database and comare each table's schema and data against the baseline (the current release) then scripting out the changes that were made.
Can someone give me some tips on how to maintain parallel database development and the merge process that can make this happen?
Thanks,
Kurt
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Sep 15, 2006
I replicate (transactional replication) my data entry database to aread-only database. Both are SQL 2000+SP4. The web server reads theread-only database. At times, there will be lots of changes in the dataentry database, thus lots of replications to the read-only database. Iam concerned that the replication may lock the data in the read-onlydatabase, causing slow response to the web server.I would like to use row versioning so that the read-only database cansupply old data when the same row is being written by replication. Iread that row versioning is a feature in SQL 2005. Is there anyversioning capability in SQL 2000?Thanks
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Feb 11, 2008
I have a question about how I should go about handling different database versions (schema changes) with my application. I am using an sdf database as a local data store (either on the .NET framework or Compact Framework).
I set it up so that the database file has the database schema, but no actual data, which is copied to the AppData folder if it isn't already there. The I load the database into the dataset, and can store data in the database with no problems.
What I want to figure out is what happens when I later decide to change the database schema. For example, say I add a column to a table. When I load the existing database into the dataset, I get an exception because the existing database doesn't have that column.
It seems that there should be some way to update the existing database so that it adds the column into the table, and sets the rows to just have NULL for that new column.
I am not sure if the TableAdapter or some other object should handle updating the existing database so it matches the latest dataset schema, or if I need to manually write SQL statements to modify the existing database.
Any help is appreciated.
Adam
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Nov 16, 2007
I was wondering if anyone knows if there is a way to version a report, after changes have been made kind of like there is to an application. when changes are made to an app with a version # of say 4.0.1 you can changge to 4.0.1. Without using a program like SourceSafe. Thanks in advance for the speed responses.
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Sep 4, 2007
Hi,
Could someone point me in the right direction? I have an internal development database and a production database. Is there an easy way to replicate the changes that have been made to the development version on the production server without modifying the actual data in the tables? So, if I add a new user in my development version I offcourse don't want to see it pop up in the live version. But adding/deleting/updating a new table or column should.
And if possible I'd also like to know how you could do the following: Let's say we have an OrderDetail table containing information about the purchased product. Let's say I'd like to add a new column 'total' to skip calculation on the database every time I want to know the totals. It should be able to initialise the value by doing 'times ordered * price' for every existing row. Is that possible as well?
Srry for the noob questions
edit: Using MSSQL 2005
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Jan 8, 2008
At ScottGu's Blog about "Database Publishing Wizard", AlexD from codeplex said:
"Regarding the multiple requests for versioning, backup/restore of remote database, and selection of individual objects - these are all things we are actively looking at for our next release in the first half of 2007."
After so many searches, I still don't know if this tool performs Versioning, i.e, when deploying the database, just update de diferences between the local and server database.
Did Visual Studio Express 2008 have somethingh like that? (I know that VS Team Edition 2005 had).
If this tool can't make it (versioning), which tool/method did you recomend me?
Thanks in advance.
Alberto
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Jun 15, 2005
Anybody using this feature?How To Add SQL Server 2000 Stored Procedures to Visual SourceSafe by Using Visual Studio .NETany comments?
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Jun 22, 2005
I did a seach here and found some posts but none that answered my specific problem.I am a programmer tasked with building an application for generating Quote Proposals. The database is for the most part fairly simple except when it comes to versioning and history. Basiclly every quote can be revised and modified several times prior to making a final decision (final approved quote), so I need to keep track of the changes that occur durning the revision process. I am not a DBA but I have had some database experience. From what I can tell I have two choices a.) Duplicate all the data everytime the quote is revised. While this method is does cause a lot of duplicate data it is very straitforward and easy to explain (or turnover to someone else) and reporting becomes very easy as well.Reporting.... this is my biggest area of concern as the users of the app should have the ability to print out the original quote proposals as well as the revised quote proposals. Duplicating all the data makes reporting very easy.b.) Create a history table and record the original data (along with who and when) before recording the new value in the main table. While this method does conserve disk space it make reporting a bit difficult as you would have to pull the specific value for a specific Quote Revision and display the orginal values on the report instead of the current ones.Table info: I looking a 10 to 12 tables to record and store the data. The largest table will have about 40 fields. Current estimates are producing about 5 to 8 quotes per week. Each quote is revised an average of 2 to 3 times.Are the pros and cons I listed the main ones to be concerned with and are there any other options?Thanks
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Mar 6, 2001
Does Anyone know if there is a way to verify the SQL Service Pack Version on 7.0? Thanks. Dallas
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