A.It can be used to join a maximum of three tables 
B.It can be used to restrict the number of columns used in a NATURAL join 
C.It can be used to access data from tables through equijoins as well as nonequijoins 
D.It can be used to join tables that have columns with the same name and compatible data types

A. ENABLE启用
B. ENABLE_PROGRAM
C. VALIDATE_PROGRAM
D. SET_ATTRIBUTE设置属性
E. SET_ENABLED

A. SET_JOB_ARGUMENT_VALUE
B. SET_JOB_VALUE_ANYDATA
C. SET_JOB_ANYDATA_VALUE
D. SET_SPECIAL_JOB_VALUE
E. SET_JOB_ANYTYPE_VALUE

A.All data along with the table structure is deleted 
B.The pending transaction in the session is committed 
C.All indexes on the table will remain but they are invalidated 
D.All views and synonyms will remain but they are invalidated 
E.All data in the table are deleted but the table structure will remain

A. A subplan has the PLAN_SUB parameter value set to SUB
B. A top-level plan has the GROUP_OR_PLAN parameter set to the name of the subplan in the resource-plan definition
C. There is no difference in the resource-plan definition
D. A subplan always has the CPU_MTH parameter value set to RATIO
E. The string TOP_LEVEL is appended to the name of top-level resource plans

A.The default internal storage of dates is in the numeric format 
B.The default internal storage of dates is in the character format 
C.The RR date format automatically calculates the century from the SYSDATE function and does not allow the user to enter the century 
D.The RR date format automatically calculates the century from the SYSDATE function but allows the user to enter the century if required

A.16 
B.100 
C.160 
D.200 
E.150

A.an error because the ROUND function specified is invalid 
B.an error because the WHERE condition specified is invalid 
C.number of days since the promo started based on the current Chicago date and time 
D.number of days since the promo started based on the current Singapore date and time 

A.The LIKE operator cannot be used with single-row subqueries 
B.The NOT IN operator is equivalent to IS NULL with single-row subqueries 
C.=ANY and =ALL operators have the same functionality in multiple-row subqueries 
D.The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries 

A.Only one LONG column can be used per table 
B.A TIMESTAMP data type column stores only time values with fractional seconds 
C.The BLOB data type column is used to store binary data in an operating system file 
D.The minimum column width that can be specified for a VARCHAR2 data type column is one 
E.The value for a CHAR data type column is blank-padded to the maximum defined column width

A.A subquery can retrieve zero or more rows 
B.Only two subqueries can be placed atone level 
C.A subquery can be used only in SQL query statements 
D.A subquery can appear on either side of a comparison operator 
E.There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement