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Technical Article

Techniques for Uniquely Identifying Database Records

When designing and creating a data model for a data-driven application, the records in tables must each be uniquely identifiable. By having a unique value associated with each record, individual records can be selected, updated, or deleted. Being able to uniquely identify records is so important and standard in a database system that databases allow those designing a database table to specify what column (or columns) make up the primary key.

2006-12-22

3,518 reads

External Article

Tales of Corporate Espionage

All good detective stories have a femme fatale. In the case of corporate espionage scandals, Celia Goodson, a seasoned businesswoman and once a glossily groomed blonde, has been involved in investigating more business transgressions to hit the City in the last three decades than anyone else of her years.

2006-12-21

2,627 reads

SQLServerCentral Article

Free Phil Factor eBook: Confessions of an IT Manager

Download a 108-page eBook in which Phil Factor lifts the lid on the victories, defeats and absurdities of a career spent in the rough-and-tumble of the IT industry. The paperback will to available to buy from Lulu.com shortly ($25), but the eBook is free for registered Simple-Talk.com users

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2006-12-18

2,527 reads

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Question of the Day

Locking Hierarchies

You have a table [dbo].[orders] without a Clustered Index (Heap). The table does not have any other nonclustered indexes! You rund the following command in Read Committed Isolation Level:

SELECTo_orderdate,
        o_orderkey,
        o_custkey,
        o_storekey
FROMdbo.orders
WHEREo_orderkey = 3877;

What locking hierarchy will Microsoft SQL Server use?

 

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