Introduction to Database System A key is a group of one or more attributes that uniquely identifies a row. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The relational model uses some unfamiliar terminology. A tuple is equivalent to a data base field data item record data base field data item record ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Batch processing is appropriate if a large computer system is available only a small computer system is available only a few transactions are involved All of these None of these a large computer system is available only a small computer system is available only a few transactions are involved All of these None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes All of these None of these record relationships records and files data elements All of these None of these record relationships records and files data elements ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The _____ command is used to allocates an extent for the table in SQL None of these ALTER TABLE MODIFY TABLE MODIFY ALLOCATES REDEFINE TABLE None of these ALTER TABLE MODIFY TABLE MODIFY ALLOCATES REDEFINE TABLE ANSWER DOWNLOAD EXAMIANS APP