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[SOLVED] Does every database need a primary key?


HowdeeDoodee
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I have several full text indexed databases and some not full text. Does every database need a Primary key?

 

Here is how a typical full text db is set up.

 

Source INDEX 3

Lnum    INDEX

Topic FULLTEXT

Subtopic  FULLTEXT

Theswords  FULLTEXT

 

Here is how a typical non-full text db is set up.

 

Source INDEX 3

Lnum    INDEX

Topic INDEX

Subtopic  INDEX

Theswords  INDEX

 

What is the purpose of primary key? Does adding a primary key enable the db to be searched more rapidly?

 

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