Introduction to Database System The functional dependency R → S means that the value of S can be determined when we are given a value of R. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: identifies a column. can only be one column. identifies a row. must always be composed of two or more columns. identifies a column. can only be one column. identifies a row. must always be composed of two or more columns. ANSWER DOWNLOAD EXAMIANS APP
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 Which language has recently become the de-facto standard for interfacing application programs with relational database system? None of these dBASE SQL 4GL Oracle None of these dBASE SQL 4GL Oracle ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The modify operation is likely to be done after Insert None of these Delete Look-up All of these Insert None of these Delete Look-up All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command(s) is(are) used to enable/disable all triggers on a table? All of the listed here ALTER TRIGGERS MODIFY TRIGGERS IN TABLE ALTER TABLE All of the listed here ALTER TRIGGERS MODIFY TRIGGERS IN TABLE ALTER TABLE ANSWER DOWNLOAD EXAMIANS APP
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