I need to store a set of entities, of which there are several specialized versions. They have some common properties, but the specialized ones contain properties specific for that entity.
just started today understanding relations between ms access databases. Can a开发者_JS百科nyone figure out why this isnt working?
I\'ve be told and read it everywhere (but no one dared to explain why) that when composing an index on multiple columns I should put the most selective column first, for performance reasons.
first of all sorry for my bad english hehehe I need some help, I want to design a database for a website, like a mini Amazon. This database will manage every kind of products (TV, cars, computers, boo
In trying to learn about database normalization, I am confused by the following table: NameDateOrganisms
I\'ve just started a new job where I\'m going to have to do a fair amount of work with a multi-value database (UniVerse). What little database experience I have is in relational databases (SqlServer)
I\'m seeing lots of applications using hashes as surrogate keys instead of plain integ开发者_如何学Cers. I can\'t see any good reason for this kind of design.
Brief: I\'m fairly new to databases and currently have one with two tables for a checker type script. Is there a way to ensure that both tables use the same types of columns? This database is in Sybas
After reading over my other question, Using a Relational Database for Schema-Less Data, I began to wonder if a filesystem is more appropriate than a relational database for storing and querying schema
Im currently putting together a business app for an ipad. It will be talking to a Microsoft SQL server database.
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