In an SQL SELECT statement querying a single table, according to the SQL-92 standard the asterisk (*) means that:
A. all columns of the table are to be returned.
B. all records meeting the full criteria are to be returned.
C. all records with even partial criteria met are to be returned.
D. None of the above is correct.
Answer: Option A
A. Data Definition Language(DDL)
B. Data Manipulation Language(DML)
C. Both of above
A. EXISTS operator
B. NOT operator
C. IS NULL operator
D. None of these