alice9313

摘要： 16.Which three statements are true about dropping and unused columns in an Oracle database?(Choose three.) A. A primary key column referenced by anoth 阅读全文

摘要： 15.Examine this command: ALTER DATABASE MOVE DATAFILE '/u01/sales1.dbf' TO /u01/sales01.dbf' REUSE; Which two statements are true? (Choose two.) A. DM 阅读全文

摘要： 14、choose one Examine the description of the CUSTOMERS table: name null? type CUST_ID NOT NULL VARCHAR2(6) FIRST_NAME VARCHAR2(50) LAST_NAME NOT NULL 阅读全文

摘要： 13.You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the 阅读全文

摘要： 12.Which three statements are true about a self-join? (Choose three.) A. The ON clause must be used B. The query must use two different aliases for th 阅读全文

摘要： 11.Which two statements are true about the SET VERIFY ON command? (Choose two.) A. It can be used only in SQL*Plus B. It displays values for variables 阅读全文

摘要： 10.Which three functions are performed by dispatchers in a shared server configuration? (Choose three.) A. writing inbound request to the common reque 阅读全文

摘要： 9.Which two statements are true regarding a SAVEPOINT? (Choose two.) A. Rolling back to a SAVEPOINT can undo a CREATE INDEX statement B. Rolling back 阅读全文

摘要： Which three statements are true concerning logical and physical database structures? (Choose three.) A. All tablespaces may have one or more data file 阅读全文

摘要： In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1. The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database 阅读全文