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Q:

 A composite attribute is which of the following?

A) An attribute that can be broken into components B) An attribute that cannot be broken into components
C) Multiple attributes D) An identifier
 
Answer & Explanation Answer: A) An attribute that can be broken into components

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Q:

A shared database should:

A) be accurate and available. B) provide for backup and recovery.
C) be secure. D) All of the above.
 
Answer & Explanation Answer: D) All of the above.

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Q:

________ is an open source DBMS product that runs on UNIX, Linux and Windows.

A) MySQL B) JSP/SQL
C) JDBC/SQL D) Sun ACCESS
 
Answer & Explanation Answer: A) MySQL

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Q:

 The ODBC Level 1 API contains which of the following functions?

A) Browse possible connections and data sources only B) Connect to data sources with driver-specific information only
C) Process a scrollable cursor only D) Both 1 and 3 above are in the OBDC Level 1 API.
 
Answer & Explanation Answer: B) Connect to data sources with driver-specific information only

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Q:

 ________ is a simple object model that is easier to understand and use than OLE DB, and is frequently used for database applications.

A) ASP B) XML
C) ODBC D) ADO
 
Answer & Explanation Answer: D) ADO

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Q:

The ODBC core API consists of which of the following functions?

A) Commit or rollback transactions only B) Connect to data sources only
C) Connect to data sources with driver-specific information only D) Both 1 and 2 above are in the OBDC core API.
 
Answer & Explanation Answer: D) Both 1 and 2 above are in the OBDC core API.

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Q:

An Oracle System Change Number (SCN):

A) is a value that is incremented whenever a dirty read occurs. B) is incremented whenever a deadlock occurs.
C) is a value that keeps track of explicit locks. D) is a value that is incremented whenever database changes are made.
 
Answer & Explanation Answer: D) is a value that is incremented whenever database changes are made.

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Q:

 What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?

A) ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0); B) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);
C) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0); D) None of the above is correct.
 
Answer & Explanation Answer: C) ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);

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