2007-12-24
3,474 reads
Database Design
2007-12-14
2,750 reads
Relational Databases 101
In this sample chapter, William R. Vaughn gives you a kick-start on designing relational databases that can perform better, be easier to maintain, and be more successful thanks to a combination of formal rules and informal suggestions to normalize your database.
2007-12-10
3,397 reads
Too Simple, Too Soon
The author explains an application development approach advocated by many proponents of agile application development that can cause future problems for developers, while potentially sacrificing the integrity and reusability of the data.
2007-11-28
3,689 reads
Beginning Database Design - Spot the Flaws
A new series by Steve Jones that tackles a basic design of a few tables. Read the scenario, look over this design, and see if you can find the problems.
2007-11-20
8,818 reads
Celko on SQL: Natural, Artificial and Surrogate Keys Explained
SQL programming guru Joe Celko offers a classification scheme and advice on using the right keys.
2007-10-25
3,595 reads
Views for Abstraction
Views are one of the more basic constructs in SQL Server, but often it seems that developers are not sure when to use them. SQL Server expert DBA and trainer Andy Warren brings us a look at views as an abstraction layer in your database.
2007-10-25
5,122 reads
SqlCredit – Part 9: Message Authentication Codes
This month's installment of "Developing a Complete SQL Server OLTP Database Project" covers searching encrypted data, dictionary attacks, and look-ups by hashed value.
2007-10-01
1,557 reads
SqlCredit Part 8: Comparing Encrypt/DecryptByCert and Encrypt/DecryptByKey
Continuing with this series looking at encryption functions.
2007-09-28
2,381 reads
Blogs
10 Decisions to Make Before You Create A Fabric Workspace
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Flyway Tips: Object History
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It’s a small change, but a handy one. Flyway Desktop (FWD) now includes the...
Car Update September 2026
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Forums
Adding new column with DEFAULT II
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Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7
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You Need a DBA Pipeline
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Question of the Day
Adding new column with DEFAULT II
Which number did the two COUNT(*) return:
DROP TABLE IF EXISTS #tmp CREATE TABLE #tmp (id INT NOT NULL) INSERT INTO #tmp (id) SELECT gs.value FROM GENERATE_SERIES(1, 5) AS gs ALTER TABLE #tmp ADD my_value INT NOT NULL CONSTRAINT df_tmp_my_value DEFAULT 1 SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1 ALTER TABLE #tmp DROP CONSTRAINT df_tmp_my_value ALTER TABLE #tmp ADD CONSTRAINT df_tmp_my_value DEFAULT 2 FOR my_value SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1See possible answers