Which two are true about self joins? A) They are always equijoins. B) They require the NOT EXISTS operator in the join condition. C) They have no join condition. D)They can use INNER JOIN and LEFT JOI ...

Examine the data in the PRODUCTS table: PROD ID PROD NAME PROD LIST CATEGORY ID 101 Plate 10 ...

Which two are true about the USING clause when joining tables? A) All column names in a USING clause must be qualified with a table name or table alias. B) It can never be used with onatural join. C) ...

You own table DEPARTMENTS, referenced by views, indexes, and synonyms. Examine this command which executes successfully: DROP TABLE departments PURGE; Which three statements are true? A) Neither can i ...

You execute these commands successfully: CREATE GLOBAL TEMPORARY TABLE invoices _ gtt ( customer id INTEGER, invoice_ total NUMBER (10, 2) ) ON COMMIT PRESERVE ROWS; INSERT INTO invoices_ gtt VALUES ( ...

Which two statements are true about an Oracle database? A) A table can have multiple primary keys. B) A table can have multiple foreign keys. C) A NUMBER column without data has a zero value. D) A co ...

Which statement will return the last sequence number generated by the EMP_ SEQ sequence? A SELECT NEXTVAL FROM emp_ seq; B SELECT CURRVAL FROM emp_ seq; C SELECT emp_ seq. CURRVAL FROM DUAL; D SELECT ...

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