How To Implement One-to-one, One-to-many And Many-to-many Relationships While Designing Tables?
Mar 20, 2008
Can Anybody explain me this how to Do this ?
Is this done by definning the Primary key and foreign key constraints ?
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Help Designing Tables
Jul 18, 2007HI gurus,
I need help with database design. I am doing a bowling league program.
1. each bowling center has 1 or more leagues
2. each league has 2 or more teams
3. each team has 2 or more bowlers
4. each week each team bowls 3 games
5. summer leagues last ~13 weeks
winter leagues last ~36 weeks
Tables I have + is primary key FK is foreign key
BowlingCenter
+ CenterID
......
League
+ LeagueID
FK CenterID
.......
Team
+ TeamID
FK LeagueID
Bowler
+ BowlerID
FK TeamID
Here I am lost. How do I do the 3 games a week for 13 or 36 weeks AND associate the 3 games each week with each bowler?
Any help would be appreciated.
Designing Relational Tables
Sep 22, 2007Hi, not sure if this is the right forum for this question.
I am creating relational tables for the first time in sql server express. I will have an orderItems table and an orders table. the MenuItems table is the problem. It is a catalogue of books. There will be about ten columns. all are unique to each book. i.e isbn number, title, author, publisher etc. but ten columns seems to be quite cumbersome. it may be easier to break the table down into two tables (i.e. primary details and secondary details perhaps) However to populate the table in the first place it would be easier to have it as one table instead of opening and closing 2 tables Adding the odd book to the two tables in the future would not be a problem. so the question is can i create a table and then brak it into two relational tables afterwards. If so how do i do this. this is my foirst go at relational tables and i am still trying to get a handle on visualising them. If my logic is up the wall please let me know....
Nick
Question About Designing Tables
Sep 22, 2004Hi,
I want to define a table that has "order details" about one order where I can store a variable length list of prodcuts ordered in one order:
[prodID][qty][price]
That is to attch a collection of products to one order entry.
Thank you,
shlomi711
SQL Server 2012 :: How To Implement Nested Tables
Dec 15, 2014I need to perform some operations that seem to require multiple nested tables.
Is the following code the way I should be attempting this or is there a better way?
Here is the sample code:
SELECT tt.tdl_ID, tt.tx_ID, adj.Prof_Chgs, rc.Rvu_Comp
FROM Table1 as tt
LEFT JOIN (
SELECT tt1.Tdl_Id,
CASE
WHEN tt1.tdl_ID = '1000'
[code]....
How To Implement Incremental Load In Fact Tables.
Feb 19, 2007Hi all,
i have a fact table which loads through package,when
i m trying to load this table by running the package,i m truncating the
fact table and loading the fresh data,instaed of this without
truncating the fact table i have to implement the incremental logic in
this.
For this i can use SCD or Conditional split,but problem
here is i have many source tables to load this fact table,so its
very difficult to trace the changes in different source tables.
can any one help me out in this??????
XML Into SQL Tables With Relationships
Aug 21, 2006Hi,
I'm trying to find the most efficient method of importing XML files into SQL Server using SSIS. The objective is to read these files created in a source directory and potentially there will be a large number of these created every second.
I've experimented with the XML Source data flow task and been able to import using either the OLEDB Destination or SQL Server Destination.Using the associated XSD file
These methods work well when there are no PK or FK relationships, i.e. the target tables are stand alone.
However when I use a schema that has relationships I need to be able to import and be able to return the key then use this key to import into another table to ensure the FK relationship and so on.....
From what I know I will need to create multple Data Flow tasks when reading a single xml file then in turn create a 'look up' on a table to see if this entity exists and on error insert using the OLEDB command and then somehow return the PK generated???
Has anyone tried this? And would be happy to share there experiences?
It seems a lot easier to use an SP and then use an execute SQL task method
Your thoughts would be greatly appreciated
Thanks
John
How To Implement Alter Database Implement Restrictions On SQL2K ?
Dec 28, 2007Hi Guyz
it is taken from SQL2K5 SP2 readme.txt. Anyone have idea what to do to implement this ?
Our sp2 is failing. we suspect the above problem and researching it.we are running on default instance of SQL2K5 on win2003 ent sp2
"When you apply SP2, Setup upgrades system databases. If you have implemented restrictions on the ALTER DATABASE syntax, this upgrade may fail. Restrictions to ALTER DATABASE may include the following:
Explicitly denying the ALTER DATABASE statement.
A data definition language (DDL) trigger on ALTER DATABASE that rolls back the transaction containing the ALTER DATABASE statement.
If you have restrictions on ALTER DATABASE, and Setup fails to upgrade system databases to SP2, you must disable these restrictions and then re-run Setup."
thanks in advance.
For What Are Good Relationships Between Tables?
Jan 25, 2008hello,
i am wondering, for what i use relations between tables? if i make sure that the data inserted into the table matches, for what i need table relationships?
i have a table named Pictures with: PictureID, UserID, UserName, PictureName, Description...
do i have to make relationships between UserID from Pictures and UserId from aspnet_Users?
and the second table PicturesComments witch has: CommentID, PictureID, UserID, UserName...
do i have to makre relationship between PictureID from PictureComments and PictureID from Pictures AND between UserID from Pictures and UserId from aspnet_Users?
sorry for this stupid questions...
thanks
Setting Up Tables And Relationships?
Mar 12, 2014I am creating a small piece of software which handles a pre-advice data file, several scanner inputting weights and a supplier weight report.
The pre-advice contains a list of barcodes and details revolving around that barcode, each barcode will be scanned and a weight will be obtained, this will be place in the DB.
Currently my tables can be summarized like this.
Pre-Advice Table
Barcode
Lots of other info…
Scanners Table
Barcode
Date
Time
Weight
Which device input this information
Suppliers Weight Table
Barcode
Date
Time
Weight
Here is the process(es):
1.Pre-advice table populated.
2.When the barcode is scanned and a weight is obtained, a record will be added to the scanners table and this becomes the ‘active’ weight.If there is already an ‘active’ weight against this barcode the user will be asked if they wish to use the ‘active’ weight already in the system or update the ‘active’ weight to the weight they have entered.
3.Then when the supplier weight report is inputted into its table, should the ‘active’ weight be less than the supplier weight, the supplier weight becomes the ‘active’ weight.
At any given time a user can pull a report based on information in the Pre-Advice table, which will need to include the ‘active’ weight for that barcode’s record.
Additionally, no weights should be deleted, I need a fully traceable log of who, what, where & when. I will need to pull reports on the trials of scans so it really is a must to keep these.
Furthermore, if a scanner was to scan the same barcode after the Suppliers weight had been input and the user chooses to replace the weight then, the scanners weight should become the new ‘active’ weight.
I believe I will need to modify my tables to accommodate my needs, however I am not sure exactly what or how to set up what I need.I understand I will need some type of relationship between all of the tables to be able to pull the report on the Pre-Advice table, but I am lost.
how I will need to set up my tables/relationships in order to achieve my requirements?
Relationships Between Tables In Different SQL Databases
Jul 27, 2007There are several databases (currently in Access) that are being moved to SQL Server. Would prefer keeping those databases separate in SQL Server. How do you do something similar to Access's "link" capabilities and relate tables in different physical databases? For example, relate the authors of a document in a document database to persons in a people database where AuthorID in Docs.DocAuthors.AuthorID is related to People.Persons.PersonID
View 4 Replies View RelatedInsert Into Tables With Relationships
May 15, 2008Hi, I have two tables. One is called ContentRecord and it is one field, an identity field that is a primary key. I have another table that is has several fields including a field that is a foreign key called contentFK. I have set up a foreign key relationship between the tables. There is a one to many relationship. I would like to know the best way to add a record to both tables. The way I am thinking to do it is to do the insert statement to add the record to the ContentRecord which will return the value of the primary key field. Then do a seperate insert statement to insert the record into the second table where I set the contentFK equal to the returned value from the first statement. Does that make sense? Is there a better way to do this?
Thanks,
Laura
How Do I Transfer Tables And Relationships From One Database To Another?
Aug 24, 2006Hi, I'm working on Sql Server 2005 Express and I'm trying to transfer over some of my tables with the primary and foreign keys relations as well as the data in them from one asp.net 2.0 website to another.But I can't seem to find the Import/Export option in Sql Server 2005 Express Edition, does anyone know how I can do this?Thanks in advanced.
View 1 Replies View RelatedUsing Code To Maintain Relationships Across Tables.
May 17, 2002Can anyone give me an idea like, what percentage of organizations use 'code' to maintain the parent-child relations on their tables than
having FK constraints thru the db model? Because,all the companies that I worked with used 'code' to control the relationships across the tables(not the PK/FKs.!!)
Thanks.
Neil.
Tables Export 'Success' But No Relationships...
May 29, 2003I export all tables from serverA databaseAA to serverB (both SQL2k sp3)databaseAA with 'Success', but without any relationships. In SQL6.5 Tools of Transfer will bring all objects include relationship.
I also tried export "All Objects" which fails with unclear message. I just don't want to do a backup and restore....
thanks
David
Discover Relationships Between Existing Tables Of A Database
Mar 23, 2007Hello Friends,
I am right now working on a project that has a database with over 100 tables in a database. Because of extreme time constraints the developers didn't build in any relationships or constraints between or in the tables. Now I need to remodel the database such that the database is more structured and normalized. I don't have much knowledge about the database design since it is a 2 year old application and the person who developed the database is now gone. I know remodelling the database would require knowledge of the existing database and business rules.
I was wondering if there are any tools that could suggest or discover relationships between tables. For eg. Lets say there are two tables named 'Customer' and 'Order'. I notice that there is a column named 'id' in Customer and a column named 'customer_id' in Order. So I ask the tool to discover a relationship between id and customer_id and it tells me that there is a one-one or one-many or no relationship by comparing values. I heard ERWin would be able to do that but thats expensive. Please do let me know asap.
Truncate Tables Based On Foreign Key Relationships
Nov 5, 2007Guys,
I have 600 tables in my database, out of which 40 tables are look up value tables. I want generate truncate scripts which truncates all the tables in order of Parent child relationship excluding lookup tables. Is there any way to do this apart from figuring out Parent Child relationship and then writing the truncate statements for each of the table.
For example
EmployeeDetail table references Employee table
DepartmentDetail table references Department table
Department table references Employee table
My truncate script should be
TRUNCATE TABLE DEPARTMENTDETAIL
TRUNCATE TABLE EMPLOYEEDETAIL
TRUNCATE TABLE DEPARTMENT
TRUNCATE TABLE EMPLOYEE
IS there any automated way to figure out parent and child tables and generate truncate script for the same.
Thanks
Creating Tables In SQL Server Via Query Analyzer With Relationships
Jun 7, 2005I've been searching around for some info on how to set this up, but with no luck.I need to have a .sql file that will set up a few tables and these tables will have relationships and contraints.I can do this by hand in enterprise manager, but need to set up some procedures that will do the same thing.For instance, I can create the tables just fine.....CREATE TABLE students ( sId int NOT NULL PRIMARY KEY, studentId varchar(50) NOT NULL, course varchar(50) )
CREATE TABLE courses ( cId int NOT NULL PRIMARY KEY, course varchar(50) NOT NULL, sco varchar(50) )But, I need to set up relationships in there somehow.Once student may have many courses (one to many) and one course may have many sco's (one to many) SCO would be another table.Can someone point me to a good link that would show how to complete these procedures?Thanks all,Zath
Get New Database Created Then Running Script To Created Tables / Relationships
Jun 29, 2015trying to get a new database created then running a script to created the tables, relationships, indexes and insert default data. All this I'm making happen during the installation of my Windows application. I'm installing SQL 2012 Express as a prerequisite of my application and then opening a connection to that installed SQL Server using Windows Authentication.
E.g.: Data Source=ComputerNameSQLEXPRESS;Initial Catalog=master;Integrated Security=SSPI; Then I run a query from my code to create the database eg: "CREATE DATABASE [MyDatabaseName]".
From this point I run a script using a Batch file containing "SQLCMD....... Myscriptname.sql". In my script I have my tables being created using "Use [MyDatabaseName] Go CREATE TABLE [dbo].[MyTableName] .....". So question is, should I have [dbo]. as part of my Create Table T-SQL commands? Can I remove "[dbo]."? Who would be the owner of the database? If I can remove the [dbo]., should I also remove dbo. from any query string from within my code?
Help Designing A DB
Feb 26, 2004I am trying to build something similar to www.alienware.com where it lets you build your own computer. I was wondering if some one could help me design sturcture to do it on my own. I am zero in DB and know little asp. I am trying to do it for my own site.
Thanks
RS - Designing Reports
Apr 18, 2006How can I design reports for Reporting Services without using Visual Studio.NET?
I have an SQL Server 2000 with RS but I dont have a tool for designing reports.
Thx for help
Database Designing...
Apr 5, 2004Friends,
Who is responsible for the Design of Database? System Analyst, DBA, Databse Designer, Project Leader? Coz I am working as a System Analyst, but now desgining the Databse for the ERP package which I feel is another man's work. Confussed. Plz help me.
Anil
Designing Idea Please
Mar 8, 2007Dear Friends,I'm a junior DBA,
I've to prepare an online examination.
for this, I've three categories.
a)beginer level
b)intermediate level
c)expert level
again here subjects are 6. like sqlserver,oracle,c#,vb.net,html,javascript.
in these subjects, i've to select these three types of questions.
now how can i design for this requirement? shall i create three tables for beginer, intermediate,expert or shall i create 6 tables and write according that?
am i given correct inputs?
please give me an idea to design
thank you verymuch experts.
Vinod
Error While Designing
Aug 22, 2007I am new to sql server. Currently i am using sql server 2000. i have created two tables course and student , with course_id and stu_id , as primary key of the respective tables.
Now i am trying to relate them through the diagram , in order to create a relationship between the two. When i try to draw a relationship between stu_id and course_id , i get the following error
error: Unable to create relationship 'FK_stud_course'.
ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK_stud_course'. The conflict occurred in database 'student', table 'course', column 'course_id'.
Designing Databse
Sep 21, 2007Im creating a sample database for purposes of keeping track of employee's jobs + billing codes for that job. currently they just use an excel spreadsheet to keep track of billing.
Question 1:
What would be the easiest way for the manager to enter billing codes? Billing codes are numbers like 956, 958, 805 and they co-relate to prices for each billing code.
1. I want the manager to enter the billing code and have the sql database find out how much that code is and add them up daily. This would prevent the manager from having to input prices and billing codes, and extra step.
Any links on the above topic would be helpful. I'm not looking for anyone to spoon feed me code just point me in the right direction. Im relatively new to sql having only a class of sql @ ITT.
Heres the way I have the db tables laid out currently.
employee table
employee_id
technumber
fname
lname
address
workphone
homephone
trucknumber
officelocation
employeejobs table
employee_id
jobs_id
jobs table
jobs_id
codes
date
timeframe
city
hours table
hours_id
employee_id
hoursworked
month
Any info would be much appreciated, Im going to go find a sql book now ;).
Need Help With Designing A Query
Jul 20, 2005Hi All,I have a table below and I want to design a query to pull all themembers from the TABLE into a Query Result and into a single column withpoints assigned appropriately, but I am having a lot of difficultiesdoing this. Any help is greatly appreciated.TABLEMEMBER1 MEMBER2 POINTSJoe Don 2Macy 1Jack Nick 2Joe Rob 2This is a result I would like to generate from the queryQuery ResultMEMBERS Total PointsJoe 2Don 1Macy 1Jack 1Nick 1Rob 1Thank you,Jim*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
View 1 Replies View RelatedDesigning This Flow
May 9, 2008Hi
I am SSIS newbie and need help in desigining this flow.
Source Sqlserver2005
Select records based on complex sql statement from a [InstanceA].[DatabaseA].[TableA]
Target Sqlserver2005
Insert the records into another table [InstanceB].[DatabaseB].[TableB] only if these records are not present
Take the records from [InstanceB].[DatabaseB].[TableB] and insert it into
[InstanceB].[DatabaseB].[TableC] only those records which are not in C
And finally
Take the records from [InstanceB].[DatabaseB].[TableB] Join them with
[InstanceB].[DatabaseB].[TableC] and insert it into
[InstanceB].[DatabaseB].[TableD] only those records which are not already in D
Can somebody please help me in visualising this solution .
I am having problems populating a target and then using that populated
target as a source for subsequent targets.
regards
Hrishy
Designing My User Table
Feb 13, 2008Hey,I have a fairly large table for my keeping my information about users. My question is, would it be better to separate it, for example, create another table that has all the personal information (like city, street, etc)and have it related to my other table where more of the data-ish information is kept? Thanks,Sixten
View 3 Replies View RelatedDatabase Designing Tools
Jun 9, 2004Hi all,
Does anyone know how I can design the database schema. I mean what tools can be used to the design the database and view the table relationships, etc. TIA.
Vik!
Things To Consider While Designing Database
Dec 5, 2005One interviewer has asked me the following question:
What are the things that you consider while designing database?
I have told about integrity constraints, and normal forms.
but he has added 15 more concepts like
1. indexers
2. Table columns
3. Table rows
4. search facilities
6.......
Can any one give full Idea on this question?
Thanking you Ashok kumar.
Designing A Generic Database API
Nov 22, 2005Hi,
My current project requires me to convert a mysql based software to a more generic one. I started by designing separate db class files and separated the lower level connection queries from the business logic. By doing this, I now have mssql.class, mysql.class, sqllite.class etc..
But am not sure how to handle sql functions in queries. For instance, one of my queries need the use of a date function to add minutes to a db field.
In mysql, I accomplish this using
dbfield+interval '$arg' minute between date1 and date1
But in mssql I cannot use this type of query. It seems I'll have to use date_add() function. How do I handle this situation?
My frontend scripting language is php
Thanks d'advance
Celia
Designing Security In An Application
Apr 24, 2008With my next application, I'm thinking about establishing a new security paradigm for my programs, with respect to SQL Server.
In all my previous applications, connections are established using SQL Server authentication. So, all my users may log-in under a single log-in, mapping to a single user in a database. My application then has to use its own security arrangement to determine who has access to what forms within the application. There are three major problems with this design: 1) the user name and password to connect to the SQL server have to be resident as strings somewhere in the application code (or ancillary files), 2) everyone connecting to the SQL Server "looks" the same, and 3) you have to give the broadest rights to everyone with the same login and then pare those rights down within the application itself.
By implementing multiple SQL Server Authentication logins I can mitigate problems 2) and 3), but the only way to eliminate problem 1) is to move to Windows Authentication.
Windows Authentication would allow me to resolve all three design constraints, but there is one problem that I see coming as a result.
If I use Windows Authentication, each user must have an independent login to the SQL Server. If I have an application that may have 4,000 to 6,000 users, does that means I have to have 4,000 to 6,000 logins set up on SQL Server?
Is that true?
I could, of course, generate a script to build all 4,000 to 6,000 users, but I am concerned about this.
Is this a "normal" arrangement that SQL Server has no problem-with?
Database Schema Designing
Feb 26, 2004Case 1:
A company is involved into e-commerce..hosting multiple websites for different products.
CAse 2:
The above scenario could also be implemented with a single site having multiple products for sale.
For Case 2 one would go for a single database for all the products.
While for CAse 1 ,a separate Database is developed for each Site.
What I fill is CAse2 is a more appropriate choice even if we have multiple sites for different products.
This would help us in rapid development of any ecommerce site...
ANd better ERP management for the Company.
I would appreciate some expert guidelines for the above scenario
Thanx in Advance
Warm Regards
Girija