Introduction to SQL Which of the following is illegal? SELECT SYSDATE - (SYSDATE + 2) FROM DUAL; None of these SELECT SYSDATE - (SYSDATE - 2) FROM DUAL; SELECT SYSDATE - SYSDATE FROM DUAL; SELECT SYSDATE - (SYSDATE + 2) FROM DUAL; None of these SELECT SYSDATE - (SYSDATE - 2) FROM DUAL; SELECT SYSDATE - SYSDATE FROM DUAL; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following SQL query is correct for selecting the name of staffs from 'staffinfo' table where salary is 10,000 or 25,000? None of these SELECT name FROM staffinfo WHERE salary IN (10000, 25000); SELECT name FROM staffinfo WHERE salary BETWEEN 10000 AND 25000; Both A and B None of these SELECT name FROM staffinfo WHERE salary IN (10000, 25000); SELECT name FROM staffinfo WHERE salary BETWEEN 10000 AND 25000; Both A and B ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which SQL statement is used to delete data FROM a database? DELETE REMOVE COLLAPSE ALTER DELETE REMOVE COLLAPSE ALTER ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL What is a view? A view is a database diagram. None of these A view is a special stored procedure executed when certain event occurs. A view is a virtual table which results of executing a pre-compiled query. A view is not part of the physical database schema, while the regular tables are. A view is a database diagram. None of these A view is a special stored procedure executed when certain event occurs. A view is a virtual table which results of executing a pre-compiled query. A view is not part of the physical database schema, while the regular tables are. ANSWER DOWNLOAD EXAMIANS APP
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