UNION		THE INTEGRITY THAT DOESN'T ALLOW AN ATTRIBUTRE OF A PRIMARY KEY TO BE NULL
UPDATE		A RELATIONAL ALGEBRA OPERATION WHERE ALL TUPLES THAT ARE COMMON IN BOTH RELATIONS
COUNT		AGGREGATE FUNCTION TO FIND THE TOTAL NUMBER OF VALUES OF AN ATTRIBUTE
DISTINCT		A SUPERKEY WITH NO PROPER SUBSET
DELETEFROM		USED TO ENTER A NEW TUPLE IN A TABLE(SQL)
ISNULL		A VALUE THAT IS UNKNOWN OR NOT APPLICABLE
ORDERBY		THE LANGUAGE TO CHANGE/MANIPULATE THE DATA
HAVING		A DERIVED RELATION
SYBQUERY		USED FOR SORTING RESULTS (SQL)
ENTERPRISE		NOTE THE FOLLOWING EXPRESSION (SELECT A, SUM(B) FROM TABLE1), WHICH CLAUSE MUST WE USE
VIEW		IT ELIMINATES DUPLICATES
DATABASE		USED TO FIND WHETHER A VALUE IS NULL
SUPERKEY		ATTRIBUTES THAT UNIQUELY IDENTIFY TUPLE IN A RELATION
DDL		USED IN A MEMBERSHIP SEARCH CONDITION(SQL)
INSERTINTO		NUMBER OF TUPLES
DML		USED IN PATTERN MATCH SEARCH CONDITION(SQL)
CARDINALITY		IT RESTRICTS THE VALUES IN ROWS(SQL)
DIFFERENCE		THE LANGUAGE TO DESCRIBE THE DATA
NULL		A RELATIONAL ALGEBRA OPERATION WHERE TUPLES THAT ARE IN RELATION R BUT NOT IN RELATION S
WHERE		NUMBER OF ATTRIBUTES
ENTITY		A COLLECTION OF LOGICALLY RELATED DATA
SEMIJOIN		USED TO CHANGE THE VALUE IN AN ATTRIBUTE (SQL)
ALTERNATE		NOT SELECTED AS A PRIMARY KEY
BETWEENAND		USED TO ERASE DATA (SQL)
IN		A RELATIONAL ALGEBRA OPERATION WHERE ALL TUPLES FROM BOTH RELATIONS DUPLICATES ELIMINATED
GROUPBY		USED INSTEAD OF A JOIN
CANDIDATEKEY		A RELATIONAL ALGEBRA OPERATION WHERE IT CONTAINS THE TUPLES OF R THAT PARTICIPATE IN THE JOIN OF R WITH S
DEGREE		ADDITIONAL RULES SPECIFIED BY THE USER
INTERSECTION		IT RESTRICTS THE VALUES OF GROUPS (SQL)
LIKE		USED IN A RANGE SEARCH CONDITION (SQL)