Introduction to Database System Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator? Supertype entity Instance entity Subtype entity Archetype entity Supertype entity Instance entity Subtype entity Archetype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes records and files record relationships data elements All of these None of these records and files record relationships data elements All of these None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction? SAVE PACK ZIP COMMIT SAVE PACK ZIP COMMIT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The primary key is selected from the: determinants. foreign keys. composite keys. candidate keys. determinants. foreign keys. composite keys. candidate keys. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which language has recently become the de-facto standard for interfacing application programs with relational database system? SQL 4GL dBASE Oracle None of these SQL 4GL dBASE Oracle None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not considered to be a basic element of an enterprise-class database system? COBOL programs Users Database applications DBMS COBOL programs Users Database applications DBMS ANSWER DOWNLOAD EXAMIANS APP
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