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Which of the following is true concerning systems information in an RDBMS?
RDBMS store database definition information in system-created tables.
This information can be accessed using SQL.
This information often cannot be updated by a user.
All of the above.
Correct Answer:
All of the above.
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Advanced SQL
A CASE SQL statement is which of the following?
Which of the following statements is true concerning routines and triggers?
The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T ;
How many tables may be included with a join?
Which of the following is a correlated subquery?
The joining technique is useful when data from several relations are to be retrieved and displayed and the relationships are not necessarily nested.
There should be one condition within the WHERE clause for each pair of tables being joined.
A transaction is the complete set of closely related update commands that must all be done, or none of them done, for the database to remain valid.
A correlated subquery is where the outer query depends on data from the inner query.
The code to create triggers and routines is stored in only one location and is administered centrally.
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