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      10.4.5 Limits on Number of Databases and Tables
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  <p>
   MySQL has no limit on the number of databases. The underlying
        file system may have a limit on the number of directories.
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  <p>
   MySQL has no limit on the number of tables. The underlying file
        system may have a limit on the number of files that represent
        tables. Individual storage engines may impose engine-specific
        constraints.
   <code class="literal">
    InnoDB
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   permits up to 4 billion
        tables.
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