Introduction to SQL Which SQL statement is used to delete data FROM a database? ALTER DELETE REMOVE COLLAPSE ALTER DELETE REMOVE COLLAPSE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL statementSELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL; 6789 2345 456789 1234 6789 2345 456789 1234 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL What operator tests column for the absence of data? EXISTS operator IS NULL operator NOT operator None of these EXISTS operator IS NULL operator NOT operator None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which command undo all the updates performed by the SQL in the transaction? ROLLBACK COMMIT TRUNCATE DELETE ROLLBACK COMMIT TRUNCATE DELETE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included. SINGLE UNIQUE ONLY DISTINCT SINGLE UNIQUE ONLY DISTINCT ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. True False True False ANSWER DOWNLOAD EXAMIANS APP
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