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  1. To reactivate indexes the command used is _________________.
    1. ENABLE INDEXES
    2. ENABLE KEYS
    3. DISABLE INDEXES
    4. DISABLE KEYS
    5. None of these
Correct Option: B

In MySQL, the clauses ‘DISABLE KEYS’ and ‘ENABLE KEYS’ are used to deactivate and reactivate indexes for the table. The server does the work in deactivations and reactivations.


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