单项选择题
A. a schema object B. a subquery that can contain an ORDER BY clause C. another name for a view that contains group functions D. a subquery that is part of the FROM clause of another query
The DBA issues this SQL command: CREATE USER scott IDEN...
单项选择题The DBA issues this SQL command: CREATE USER scott IDENTIFIED by tiger; What privileges does the user Scott have at this point?（）
A. no privileges B. only the SELECT privilege C. only the CONNECT privilege D. all the privileges of a default user
Which two tasks can you perform using only the TO_CHAR ...
多项选择题Which two tasks can you perform using only the TO_CHAR function? （）
A. convert 10 to 'TEN' B. convert '10' to 10 C. convert 10 to '10' D. convert 'TEN' to 10 E. convert a date to a character expression F. convert a character expression to a date
A data manipulation language statement （）.A. completes ...
单项选择题A data manipulation language statement （）.
A. completes a transaction on a table B. modifies the structure and data in a table C. modifies the data but not the structure of a table D. modifies the structure but not the data of a table
