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A lock prevents the use of any tables in the database from one transaction while another transaction is being processed.
Q6: The SQL execution activities are performed by
Q7: It is possible for a table in
Q26: As rare as 1:1 relationships should be,
Q32: _ data exist in the format in
Q37: In an SQL-based relational database, rows in
Q54: Composite primary keys are particularly useful as
Q63: A _ is the primary key of
Q78: The mainframe environment enables an OLAP system
Q81: The requirement that a password must have
Q82: _ are objects that manage the connection