java - Question about SQL catalogs - What exactly are they? -

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Now something is bothering me, and one hour or two googlin 'has not really told any useful Replying to the topic, I thought I would just write questions.

When I am creating a database using 'create database' in SQL, then am I making a list in that database? Is it appropriate to refer to 'DBNAME' as a list? Or is it something completely unrelated?

When I use the getMetaData () function, using the MySQL JDBC driver to get the list of tables in the database using the "TABLE_CAT" column (meaning 'I will be cataloged') always me The name of the chosen database is set to.

Coincidence? Or am I completely wrong on this?

List how many people have the JDBC word (and some RDBMs) call databases. I.e. a collection of tables / ideas etc. in the database system.


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