Technical Questions

Q:

Of the three ways to create an Oracle database, which one is the easiest and most recommended?

A) Using the Oracle Database Configuration Assistant. B) Using the Oracle-supplied database creation procedures.
C) Using the SQL CREATE DATABASE command. D) None of the above is correct.
 
Answer & Explanation Answer: A) Using the Oracle Database Configuration Assistant.

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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:

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:

 ________ 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:

Which of the following are goals of OLE DB?

A) Create object interfaces for DBMS functionality pieces only. B) Increase flexibility only.
C) Object interface over any type of data only. D) All of the above as goals of OLE DB.
 
Answer & Explanation Answer: D) All of the above as goals of OLE DB.

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Q:

 Which JDBC driver Type(s) is(are) the JDBC-ODBC bridge?

A) Type 1 B) Type 2
C) Type 3 D) Type 4
 
Answer & Explanation Answer: A) Type 1

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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 ternary relationship involves how many entities?

A) 3 or less B) 3
C) More than 3 D) 3 or more
 
Answer & Explanation Answer: B) 3

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