php database?

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What a database is, and what types there are
What constitutes a relational database
What an Entity Relationship Diagram (ERD) is and how to create one

2007-02-23 14:08:43 · 1 answers · asked by Anonymous in Computers & Internet ➔ Other - Computers

1 answers

A database is a repository for data.
A relational database has tables with rows of data, which you can manipulate and query with relational operators via SQL.
An ERD is a diagram with objects which will be tables in the database. Draw one with lines and circles representing objects and attributes.

2007-02-25 09:09:19 · answer #1 · answered by John Mahowald 5 · 0⤊ 0⤋