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Closed 11 years ago.
In relational Databases, of course.
It depends on the reqquirment whcih normal form to use, Most of the people make use of 3NF.
But one thing is there as the normalization level increase joins will increase to get data from database server.
Related
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Closed 9 years ago.
When I have for example only one record for administrators (only one administrator) with id and password, is it necessary to create a table administrator or not? Why?
There's nothing inherently wrong with a one record table. It's a function of your design. For example, an administrator is not a type of user so you wouldn't stick an administrator in the user's table. But that's a design decision.
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Closed 9 years ago.
Would you also describe the benefits of using the specific structures in the context of a database system? I was asked this in an interview.
B-trees. Hierarchical index, sorted keys and balanced tree enabling fast retrieval are the main benefits and coping well with large amounts of data and inserts/updates/deletes.
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Closed 10 years ago.
How can I get a dummy database where I can do some indexing on tables?
What dummy database is the best for my study?
have u tried http://sqlfiddle.com/? It is simple to use and supports mySQL and SQL Server
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Closed 10 years ago.
Does the programming language D support task-based parallelism in any way, either natively or through some API?
check out the obviously named parallelism module
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Closed 11 years ago.
What is user define function in sql server 2005.How Can I see them from design point of view.
I wanted to create and execute the function.Can anybody explain me.I have not done it before.
User-Defined Functions from MSDN Books Online