| Thread | Last Post | Replies |
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| mysql full outer join | 30 Aug 2007 21:27 GMT | 5 |
why doesn't the following work? mysql> select * from girls full outer join boys where girls.city = boys.city; where : drop table girls;
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| rdbms comparison | 27 Aug 2007 21:26 GMT | 2 |
Does DB2 not support Multi-versioning? Now SQL Server 2005 also has Snapshot Isolation. [bis 8 nicht, 9 glaube ich auch nicht, vielleicht Viper2?] See http://technet.microsoft.com/en-us/library/ms345124.aspx
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| standard and easy way to do schema design | 22 Aug 2007 18:32 GMT | 29 |
I wonder instead of just brainstorming, there probably is a very standard and a simple way to do database schema design. let's say we are doing a website. the user can go over and type in the movie name and zipcode, and the website
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| Fwd: Links on the Benefits of Vegetarianism | 20 Aug 2007 13:22 GMT | 2 |
Watch Meet Your Meat: http://www.petatv.com/tvpopup/Prefs.asp?video=meet_your_meat Vegetarianism for health: http://goveg.org/healthConcerns.asp
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| What happens after 2^32 autonum keys are exhausted? | 20 Aug 2007 13:19 GMT | 81 |
Autonum fields for generating primary keys are limited to 2^32 (10^10) keys. It is my understanding that they are not reused. What happens when the last key is generated and then an attempt it made to add another record?
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| SQL Help | 19 Aug 2007 19:39 GMT | 1 |
To I have the following tables: groupleaders, workgroups, employees employees, first name
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| Employee Code: Numeric or Varchar | 16 Aug 2007 23:42 GMT | 3 |
I am developing a payroll app. I have an EmployeeMaster table which contains field EmpID P.K, and EmpCode Unique. At present whatever details I have, the EmpCode is a long numeric value that the department is managing internally.
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| table update best practices | 15 Aug 2007 17:08 GMT | 7 |
With mainframe indexed files (VSAM) and DL/I (IMS) databases segments, which are somewhat analogous to rows in a table, are pretty much just, umm, large chunks of data. If you want to replace a segment with new values for one or more fields you must replace the entire segment.
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| Working mostly with Stored Procedures in RDBMS. | 15 Aug 2007 14:20 GMT | 2 |
I have few queries regarding the use of Stored Procedures, Functions and Triggers in an RDBMS. (1) When to use Stored Procedure? Writing an INSERT query in a Stored Procedure is better or firing it from the application level?
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| Among available RDBMS. When to use ... | 14 Aug 2007 21:47 GMT | 5 |
This is a common question on forums. But they just compare the features. At present RDBMS industry has matured a lot and the big three have strong competitors too like EnterpriseDB, MySQL etc. While comparing MS SQL Server, Oracle and DB2, an author writes in a
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| How to design a database model related to six degree of separation? | 13 Aug 2007 18:45 GMT | 8 |
I am trying to design a database model related to the small world (or six degree of separation) phenomenon. With this design, I should be able to write two queries efficiently: a) How many degrees of separation are there between two people.
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| Informix vs. DB2 | 13 Aug 2007 16:33 GMT | 4 |
IBM owns two products, Informix and DB2. What is the difference between the two and how reliable are they for very large databases? Are they focussed for any specific area?
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| What's your DBMS? | 10 Aug 2007 03:55 GMT | 5 |
Wow is it quiet in here. How about a quick survey of the expertise here? What databases are you using now (now meaning the last 5years or less)?
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| Public Databases of EIN and European Equivalents | 10 Aug 2007 00:42 GMT | 1 |
I am looking for a public database of federal EINs for U.S. corporations and the equivalent for corporations based in France, UK, Germany and other European countries (as well as Japan) to use as primary keys in a database. Does anyone know of such databases? I do know that I can ...
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| UPDATE rows | 08 Aug 2007 23:24 GMT | 2 |
let's say I have a mapping table with columns A', B' and C' and let's say I have a data table with columns, A, B, C, D, E, F Now, what I want to do is update the data table with C' if A=A' and B=B'
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