Related Questions

Which of the following is true concerning the following statement: class Manager extends Employee
A Manager is a concrete class and a superclass.
B Manager is a concrete class and a subclass.
C Manager is an abstract class and a superclass.
D Manager is an abstract class and a subclass.
Which of the following statements is true concerning subqueries?
A Involves the use of an inner and outer query
B Cannot return the same result as a query that is not a subquery
C Does not start with the word SELECT
D All of the mentioned
Which of the following statements concerning business rules is true?
A It should be complex.
B It should not be convertible to computer code.
C It may include restrictions.
D All of the Mentioned
Which of the following statements is true concerning JDBC?
A It is language independent.
B It is similar in concept to ODBC.
C It is useful for all object-oriented languages.
D It consists of three main layers.
Which of the following statements is a true statement concerning the open database connectivity standard (ODBC)?
A Each vendor desiring to be ODBC-complaint provides an ODBC driver.
B Requires certain criteria to be met in order to establish an ODBC connection.
C Provides a programming interface that provides a common language for application programs to access and process SQL databases independent of the RDBMS accessed.
D All of the above.
Which of the following is true concerning QBE?
A An official standard has been defined for QBE.
B QBE cannot be used for client/server systems.
C QBE does not give the programmer a visual programming environment.
D Complete applications can be written using QBE.
Which of the following is true concerning a global transaction?
A The required data are at one local site and the distributed DBMS routes requests as necessary.
B The required data are located in at least one nonlocal site and the distributed DBMS routes requests as necessary.
C The required data are at one local site and the distributed DBMS passes the request to only the local DBMS.
D The required data are located in at least one nonlocal site and the distributed DBMS passes the request to only the local DBMS.
Which of the following is true concerning a procedure?
A You do not create them with SQL.
B They do not need to have a unique name.
C They include procedural and SQL statements.
D They are the same thing as a function.
Which of the following statements is true concerning routines and triggers?
A Both consist of procedural code.
B Both have to be called to operate.
C Both run automatically.
D Both are stored in the database.
Which of the following is true concerning systems information in an RDBMS?
A RDBMS store database definition information in system-created tables.
B This information can be accessed using SQL.
C This information often cannot be updated by a user.
D All of the above.

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