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单选题
A user needs to create a trigger that will update table T2 whenever a row is added to table T1. Assuming the user has all appropriate privileges for table T2, which privilege is required on table T1 to create the trigger?（）
A
REFERENCES
B
SELECT
C
UPDATE
D
ALTER
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单选题Your company uses a SQL Server 2005 database. Customer data from your trading partners is imported into the Customers table every night. You need to ensure that the customer record is updated if it already exists in the Customers table. If the record does not exist, the data needs to be inserted into the Customers table. What should you do?（）A
Create a FOR trigger. B
Create an INSTEAD OF trigger. C
Create an AFTER trigger. D
Create a DDL trigger.
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单选题Examine the following steps performed on a database instance： 1：The DBA grants the CREATE TABLE system privilege to the SKD user with ADMIN OPTION. 2：The SKD usercreates a table. 3：The SKD user grants theCREATETABLE system privilege to the HR user. 4：The HR user creates a table. 5：The DBA revokes the CREATE TABLE system privilege from SKD. Which statement is true after step 5 is performed（）A
The table created by SKD isnot accessibleand SKD cannot create new tables.B
The tables created by SKD and HR remain， but both cannot create new tables.C
The table created by HR remains and HR still has the CREATE TABLE system privilege.D
The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.
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TableB
ColumnsC
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单选题“把查询sc表和更新sc表的grade列的权限受予用户user1”的正确SQL语句是（）。A
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The commands execute successfully.B
Command 6 produces an error because of circular role grant.C
Command 5 produces an error because a role cannot be granted to another role.D
Command 3 produces an error because the MGRROLE role already contains system privileges.E
The table created by HR remains and HR still has the CREATE TABLE system privilege.F
The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.
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单选题The following triggers were defined for table TAB1 in the order shown:CREATE TRIGGER trig_a AFTER UPDATE ON tab1 FOR EACH ROW UPDATE sale_tab SET sale_date = CURRENT DATE; CREATE TRIGGER trig_b AFTER UPDATE ON tab1 FOR EACH STATEMENT UPDATE invoice_tab SET invoice_date = CURRENT DATE; CREATE TRIGGER trig_c AFTER UPDATE ON tab1 FOR EACH ROW UPDATE shipping_tab SET ship_date = CURRENT DATE; CREATE TRIGGER trig_d AFTER UPDATE ON tab1 FOR EACH STATEMENT UPDATE billing_tab SETbilling_date = CURRENT DATE;If an event occurs that causes all of them to activate, which trigger will be activated first?（）A
TRIG_AB
TRIG_BC
TRIG_CD
TRIG_D
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单选题You execute the following set of commands to create a database user and to grant the system privileges in your production environment. SQL CREATE USER user01 IDENTIFIED BY oracle DEFAULT TABLESPACE tbs1 TEMPORARY TABLESPACE temp PROFILE default / SQL GRANT create session， create table TO user01； While executing the command to create a table， the user gets the following error message and the CREATE TABLE.. command fails. ERROR at line 1： ORA-01950： no privileges on tablespace What could be the possible reason for this error message？（）A
The tablespace TBS1 is full.B
The user is not the owner of the SYSTEM tablespace.C
The user does not have quota on the TBS1 tablespace.D
The user does not have sufficient system privileges to create table in the TBS1 tablespace.E
The user does not have sufficient privileges to create table on the default permanent tablespace.
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单选题You want to create a temporary table while executing a procedure in a form. Which statement is true?（）A
You cannot create a table form within Forms. B
You must use the FORMS_DDL built-in to create the table. C
You must use the DBMS_DYNAMIC_DDL package to create the table. D
You can write the CREATE TABLE statement directly into the trigger.
考题
单选题Examine the following steps performed on a database instance： 1. The DBA grants the CREATE TABLE system privilege to the SKD user with ADMIN OPTION. 2. The SKD user creates a table. 3. The SKD user grants the CREATE TABLE system privilege to the HR user. 4. The HR user creates a table. 5. The DBA revokes the CREATE TABLE system privilege from SKD. Which statement is true after step 5 isperformed（）A
The table created by SKD is not accessible and SKD cannot create new tables.B
The tables created by SKD and HR remain， but both cannot create new tables.C
The table created by HR remains and HR still has the CREATE TABLE system privilege.D
The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.
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单选题User A executes the following command to update the TRANS table） SQL UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT or ROLLBACK command， user B executes the following command on the TRANS table： SQl ALTER TABLE trans MODIFY （tr_type VARCHAR2 （3））； What would happen in this scenario？（）A
The transaction for user A is rolled back.B
The ALTER TABLE command modifies the column successfully.C
The ALTER TABLE command fails due to the resource being busy.D
The ALTER TABLE command waits until user A ends the transaction.
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