What Is Suitable To Learn DBA Or Oracle ?
Jul 16, 2003
Hi:
AS a newly Master degree graduate student in IT field. My M.S. degree training has been emphasized in database developer, Web developer, Web/database developer, network, and network and computer security.
My personal interesting are database and web. have experienceon java servlet and database(create a web site), try ASP and dataabase now, but I don't have any work experience(come from other country and change major)
hope can get advice from kindness prople what is suitable to learn DBA or oracle ? conside about difficult level, cost, and suite for future job market
Thank you
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Jul 6, 2007
Learn Oracle Database Administration in 10 Minutes. No kidding. Checkit yourself,http://www.takveen.comOnly good analogy makes complex concepts simple!
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Oct 17, 2007
I'm new to sql and have come up with a problem and can't seem to find the answer. Most would probably find it simple but I cant get my head around it! :p
I have the following table structure
User_Table-----------User_ID (Key)FirstNameLastName
Contacts_Table--------------User_ID (F key)Contact_User_ID
User_Table stores all users details and assigns them a User_ID. Users can add other users to their contacts, and this will be stored in Contacts_Table on a one-to-many basis.
*deep breath*... So User_ID in Contacts_Table, will store the User_ID from User_Table, and the Contact_User_ID in Contacts_Table will store the User_ID from User_Table. Does this seem ok? Sorry if I confused everyone!
So my question is, how do I select a user and show all his contacts (names etc)? I thought I could use innerjoin but I dont think it would work here.
Any ideas?
Thanks!
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Dec 3, 1998
Hi,
I am trying to dump-load a db from one server to another.I don't have any
problem with the dump and load , the problem is with scheduling the copying of
the dump file fron server1 to server2.
I tried using xp_cmdshell 'copy filename filename ' to schedule it but it
says "access denied" zero files copied...(using sa account and standard
security)
But when I telnet to server1 and issue copy filename filename it works fine.
how can I correct this problem and schedule the dump-copy-load??????
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Jun 11, 2007
In the near future I need to move a 27GB database from SQL2000 to SQL 2005 that is located in a different data center. I can do a backup, copy the .bak file over the WAN and do a restore, but that will take several hours over the WAN. I think the new server will be standalone, not a cluster. We have not purchased it as yet.
What options do I have to minimize downtime? I don't think I can log ship between SQL versions, but I might be able to run two instances of SQL on the new server (2000 and 2005), although I consider that an iffy proposition as well. The OS would be Win2003 sp2 on the new server. What other options do I have? Would mirroring work between versions? Thanks for any suggestions.
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Mar 15, 2006
Hi,
I am given with the responsibility to set up database replication in my organisation.
Before starting the replication set up, I would like to know which is the best suited replication for my application.
My application is much process oriented, and the users are working on records parallely(but with different records).
Say for ex:
There is a module for Insurance claim processing, it is handled in the following manner:
There are many employees with CSR roles, and all are working on some set of records to be processed. But No two employees should get the same record for processing. For that, we are doing locking of the cases by having one column called 'LOCKED_STATUS' and setting value as LOCKED. So that other users wont get the same case. Once the case is processed, the record is marked as unlocked.
My analysis for replication is as follows:
1. Snapshot replication: This wont be a suitable type of replication as the updations are to be immediately updated on all the subscribers, because when the user executes select query to get the next unlocked case, No 2 user should be able to get the same case.
I think, the best replication to chose from is, Transactional replication with Immediate Updation/Queued updation. But the problem is, when one of the subscriber goes offline, the updations are queued up. But in my case, say for ex. One case is updated as locked, but the subscriber is offline and the updations are queued up. At the same time, the other subscriber can fire an select query to get the next unlocked case. Since the update is on queue, there are possibilies for this subscriber to get
the same case.
Can anyone let me know, are the select statements also queued up(i.e., along with update and insert statements.)? If not please let me know how to approach for this problem.
Thanks in advance.
Prashant N M
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Aug 13, 2007
How do I write a query (using a union) suitable for paging
I currently have a query which results from two queries combined by a union. It returns 3000 rows. I want to replace that query with one which returns only 50 rows from the relevant page [using ROW_NUMBER()].
Is there a way to do this with only 1 CTE or will I need to use two consecutive CTEs [the first get a union on the queries and the second to apply ROW_NUMBER()]. I can't see a way of doing it with only 1 CTE table.
Alternatively is there a very efficient way to do it using derived tables?
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Feb 11, 2015
I have huge table, often I need to query the table on the whole; ie., data may required at any part of the table. So I think of to compress the table with the aim of reducing I/O.
1. is that really suitable for this requirement? If So which compression is good (Row or page )?
2. Or is there any other alternate to reduce the I/O (Except Indexing)?
3. Pros and cons ?
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Jul 11, 2007
I need to create an invoice report, each page represents a single invoice. like a form report.
Which control is good, i am new to reports. i have used table control for few of our reports still learning.
Thank you very much for your help.
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Mar 17, 2008
Hi Guys!
I want to buy a laptop, so that I can install and play with the trial SS 2005 Enterprise Edition and hopefully get familiar with SSIS. At work I have only used SS 2000. I want a laptop which will run this with a reasonable speed, but don't want to pay for more juice than is actually required. Does anyone have any advice on what kind of spec would be good enough for SS 2005 Enterprise? If I go for the basics suggested by the system requirements, will it run like a tortoise?
Thanks!!
Clare
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Jan 31, 2005
Hello everyone! Many thanks in advance for taking the time to help me out. I’ll also apologize upfront for the longwinded email, but I seem to be really stuck in a rut. I've been writing web apps for 3+ years in ASP and am finally taking the leap into ASP.net (a bit behind the curve, i know). I have a few books and have gone over the tutorials on this site. I am realizing that the syntax (if using VB) is much the same, but also realize how much richer asp.net is in comparison to traditional ASP.
I'm having some major issues in my learning process that stem from using the tutorials and attempting to be efficient with VS2003. I feel as though I’m missing something fundamental that could be causing my problems. My area of focus right now is data access, using connections, adapters and datasets.
The tutorials on this site show all of the examples by hardcoding the data access into the ASPX page. The tutorials have me importing the proper namespaces for data and sqldata access at the top of the page. This seems to work fine and dandy if I were to be coding my pages from a standard text editor, but I would like to use the richness of the VB.NET studio gui to expedite my work.
My first problem lies if I try to manually code the data access in the private class defined for the page in the codebehind section. Because it will not allow me to import multiple namespaces, the only way I get it to work would be to include the complete namespace for the object I’m trying to use (ie: system.data.sqlclient.sqconnection). On top of this, the datasets I define aren’t available as options when I try to bind them to objects in the GUI.
On the flip side, I tried to use the SQLconnection, Dataadapter, etc objects in the gui, but I can’t seem to find where the code is dynamically written for these, nor how I can, for example make this sort of connection use an application-variable level connection string. The only way I can see to make this would be to define the connection for each web form, which seems silly when I’m trying to deploy each solution multiple times with different databases.
I apologize for my ignorance, as this is probably fairly simple to overcome. If someone could point out what I’m doing wrong, or point me in the right direction, I’d be very appreciative. I am sick of spinning my wheels with this, and keep getting tempted to go back to using traditional ASP, just so I can get my job done.
Thanks again,
Tbldev
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Nov 23, 2005
does anyone know where I can learn how to make forumlas to use in my table fields?
I have two mauals on SQL Server and niether of them cover formulas.
Thanks,
token
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May 15, 2006
anyone know any site that can provide "EASY" to understand examples about joins?
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Jun 12, 2007
I was just looking for opinions on the best place to pick up SQL skills. Community college course? Online courses? Grad school? I've finished undergrad, if that helps anyone have an idea of my current situation.
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Dec 13, 2007
hi,
I am new to sql server. I would like to learn sql server. I have knowledge of databases. Can anyone guide me on this?
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Jul 23, 2005
How to learn sql from beginning?I would like to learn sql but don't have a clue.can you help me?where would I start?
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Aug 22, 2005
I can't get a script to run that's supposed to generate a QueryParameters dialogue to take inputs and then run the query - forexample, the following.. . .and fl.flow_name = [[TRUE][FLOW NAME][@?]].. . .generates SQL Query Analyzer exceptions about "Incorrect syntax near'FLOW NAME'.Suggestions?
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Aug 2, 2007
I have several DTS packages I need to move to SSIS. I am having trouble understanding the new tools available and how I translate my lookup and ActiveX scripts into the new format. I feel like I just need a jump start to get me on the right road. Does anyone have any good suggested links to get me started with the new technology and get my head unstuck from the old DTS?
Thanks,
Eva
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Oct 25, 2007
Hi all.. I install SQL Express install.. I am looking for a job, and I see companies posting want ad's for SQL server admins.
My one question... what is the difference of SQL Server vs OpenSQL ?
Thanks,
Happy Tom
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Aug 1, 2006
I am an experienced web developer using PHP and MySql have experience with VB.
What is the best way for me to learn programming pocket pc's? Is using sql server mobile the best offline database to use as I will be using MySql Compact framework to connect direcly to our Linux server.
Any help is much appreciated as I can't seem to find any useful tutorials on quering an sql databse to update, insert, read or delete. I have created a datebase however, I just don't know how to use it.
Thanks in advance.
Mark
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Sep 19, 2001
Greetings:
I would like to learn to write SQL scripts to use with SQL 2000 and would like a good reference. I read the book "SQL Queries for mere mortals" and that was a start, but really didn't provide me enough depth to write the complex scripts that I need. Idealy something that goes into the programming logic like PL/SQL in Oracle did. Basiclly, if I had something that would allow me to interperet some of the scripts I see on Swynk so I can modify them to meet my needs, I think that would be a great place to start.
Any recomendations?
Thanks.
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Sep 11, 2004
Hi All,
I am totally new to databases. I am starting from the absolute beginning. I want to learn MS-SQL and was wondering how/where to start. I need info on everything from installation and set-up on an Windows XP PC to programming in SQL. Is there a book or website that can guide me. I am fairly decent at programming and am able understand technical books. Installation and set up are my main concerns right now, since I believe that once I have a stable system to learn on, SQL should be easy.
Thanks!
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Jun 15, 2007
Hi, All:
I know oracle SQL, now I need to do a lot of SQL query on Microsoft SQLSERVER, can any one point out any place that I can find out the syntax of SQLserver SQL statement? Since this is just a short term assignment, so I don't want to buy a book, just hoping I can learn something quickly from online. I don't need learn anything deep, just need to know some simple syntax so I can do join, count, concatenate, min(), max(), sum () etc.
thanks in advance.
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Feb 6, 2006
Hello,
My department is switching from a TM1 database to an SQL Server database. With TM1, only a few people had the software necessary to run queries installed on their PCs. Whenever I needed data, one of these people would run the query for me and then I would perform whatever analysis is required. Now however, we all have MS SQL Server (Query Analyzer, Profiler, Enterprise Manager, etc.) installed on our machines and will be able to run our own queries.
I have no prior experience with SQL (my only programming knowledge is with Excel VBA) so I bought the "Teach Yourself SQL in 10 Minutes" book and worked through most of it. I practiced writing queries in MS Access, and feel somewhat comfortable with the language. However, when I try to do anything with SQL Server, I feel kind of overwhelmed with all of the options. I assume that I should be writing and executing my queries from Query Analyzer, but I find the object browser and everything confusing. Also, I'm not sure if I'm even able to create my own database to practice with. It seems like I can only connect to my department's server. Is there any way to work "offline" with a database on my own hard drive?
All of the SQL Server books that I've found seem to be either for DBAs or developers. Anything geared more toward beginners isn't SQL Server specific. Can anyone recommend an appropriate book for me?
Thanks,
John
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Apr 16, 2007
Dear Experts,I've worked with Oracle since 1995. I have gonevery deep into many of the Oracle features, includingsqlloader, and export/import. And I've done datamodelling even longer.At the same time, I have done ETL since 1995.Although, at the Proc, and PLSQL, sqlloader, level.Map the data. Take data from the source, do anymodifications/transformations that are required,and insert or update. Easy. The hard part isdetermining the mappings.But I have not been given the opportunity towork much with ETL tools such as:Informatica, DataStage, Ascential, Ab InitioThe little bit of experience that I do have,showed that Informatica was -incredibly- easy to use.It's a GUI. It's SUPPOSED to be simple!!!I have missed out on a number of opportunitiesbecause I didn't have a few YEARS of experiencewith ETL tools. Which seems odd, because thetool looks like it requires a max of a week to learn!Just how difficult are these ETL tools to learn?Especially if you have already been working withOracle, and doing data mappings and loads since 1995?I'm thinking that it can't be difficult at all.When you search for newsgroups, there are no newsgroupsfor these tools. Although the companies who makethem, might have their own newsgroup.There are also not many books on these tools.If you search for books on Oracle, or SQL Server,you will find a lot of very big, and detailedbooks. But there is next to nothing specificallyon the various ETL tools.Any certifications for any of these tools lookto be much simpler than Oracle's.To me, the real issue is the mappings. If youcome into a new environment, the data mappingsare completely esoteric to those systems.No amount of experience with an ETL tool, or anytool, is going to tell you what the mappings should be.Questions:- Just how difficult are these ETL tools to learnfor an experience Oracle pro like myself?- Other than a GUI, making everything simple to use,just what are the advantages of using ETL tools?- what built in functionality do ETL toolshave, that can't be done in PLSQL?Thanks a lot!
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Feb 20, 2008
Hi there,I have learned to create very, very basic queries at work, but I wouldlike to expand my knowledge. I live in Northern California, doesanyone know of any good schools and/or literature that could help mein this quest?Thanks a bunch,Juana
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Dec 31, 2007
I'd like to learn SSIS working with SSAS, how to transformation data for Dimension or fact tables? What are different between normal ETL tasks and ETL for Dimension / fact tables ? How to learn? Do I need to learn SSAS first? Please give tips for that. Many thanks.
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Oct 5, 2007
Hello.I would like to learn all the possible ways that we can access and modify data in ASP .net 2.0 programmatically.for example one way would be like this: StringBuilder sql = new StringBuilder();sql.Append(" SELECT *"); //count the total number of recordssql.Append(" FROM dbo.tblJobTitle "); //get the connection string from web servicesstring strConnection = new sqlconnection.SQLConnection().GetSQLConnectString(sqlconnection.SQLDSN.SCIC);//Use the Microsoft.practices SqlDatabase object to execute our sql.SqlDatabase SqlHelper = new SqlDatabase(strConnection);SqlDataReader reader = (SqlDataReader)SqlHelper.ExecuteReader(CommandType.Text, sql.ToString());the i can loop through reader and get the data OR I can create a DataSet like this: SqlDatabase db = new SqlDatabase(strConnection);
DbCommand dbCommand = db.GetSqlStringCommand(sql.ToString());
DataSet dst = db.ExecuteDataSet(dbCommand);I want to know if there is a comprehensive book explainaning all these possible ways to access and modify data using C# under ASP .net 2.0I really really apreciate this.Thank you very much.
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Mar 24, 2008
does anybody know where I can learn how to add, update, delete using SQL datasource control? I have a couple of books that shows me how to SELECT but nothing shows me how to update, add new record or delete with the SQL data source control. Even this website doesn't have any tutorial. Does any body know where I can read up on how to use all features of this control? Or where that have a couple of examples on how to use it?
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Nov 7, 2005
Hi there,Where I should start to learn using stored procedure in SQL Server?Is there any link/site that good for learning?Thanks,Ron.
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Feb 8, 2007
Hello,
I need to start learning SSIS. Has anyone found any good sites that explain it and that are free?
Thanks,
Kurt
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Oct 24, 2007
i want to learn about the meanings of the different 'data types' in VS 2005 (database) i.e. 'nvarchar(50). could you please advice me of a good site (reference) to read.
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Feb 11, 2008
Hi all,
In my SQL Server Management Studio Express (SSMSE), pubs Database has a Stored Procedure "byroyalty":
ALTER PROCEDURE byroyalty @percentage int
AS
select au_id from titleauthor
where titleauthor.royaltyper = @percentage
And Table "titleauthor" is:
au_id title_id au_ord royaltyper
172-32-1176
PS3333
1
100
213-46-8915
BU1032
2
40
213-46-8915
BU2075
1
100
238-95-7766
PC1035
1
100
267-41-2394
BU1111
2
40
267-41-2394
TC7777
2
30
274-80-9391
BU7832
1
100
409-56-7008
BU1032
1
60
427-17-2319
PC8888
1
50
472-27-2349
TC7777
3
30
486-29-1786
PC9999
1
100
486-29-1786
PS7777
1
100
648-92-1872
TC4203
1
100
672-71-3249
TC7777
1
40
712-45-1867
MC2222
1
100
722-51-5454
MC3021
1
75
724-80-9391
BU1111
1
60
724-80-9391
PS1372
2
25
756-30-7391
PS1372
1
75
807-91-6654
TC3218
1
100
846-92-7186
PC8888
2
50
899-46-2035
MC3021
2
25
899-46-2035
PS2091
2
50
998-72-3567
PS2091
1
50
998-72-3567
PS2106
1
100
NULL
NULL
NULL
NULL
////////////////////////////////////////////////////////////////////////////////////////////
I try to do an ADO.NET 2.0-VB 2005 programming in my VB 2005 Express to get @percentage printed out in the VB Form1. I read some articles in the websites and MSDN about this task and I am very confused about "How to Work with Output Parameters & Report their Values in VB Forms": (1) Do I need the Form.vb [Design] and specify its properties of the object and classes I want to printout? (2) After the SqlConnectionString and the connection.Open(), how can I bring the value of @percentage to the Form.vb? (3) The following is my imcomplete, crude draft code:
Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.SqlTypes
Public Class Form1
Dim connectionString As String = "Data Source=.SQLEXPRESS;Initial Catalog=pubs;Integrated Security=SSPI;"
Dim connection As SqlConnection = New
SqlConnection(connectionString)
Try
connection.Open()
Dim command As SqlCommand = New SqlCommand("byroyalty", connection)
command.CommandType = CommandType.StoredProcedure
...................................................................
..................................................................
etc.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
From the above-mentioned (1), (2) and (3), you can see how much I am lost/confused in attempting to do this task. Please help and give me some guidances and good key instructions for getting the output parameter printed out in the FORM.vb in my VB 2005 Express project.
Thanks in advance,
Scott Chang
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