A table was created using the following DDL: CREATE TABLE employee (id SMALLINT NOT NULL, name VARCHAR(9), dept SMALLINT CHECK (dept BETWEEN 10 AND 100), job CHAR(10) CHECK (job IN ('Sales','Mgr','Clerk')), hiredate DATE, salary DECIMAL(7,2), comm DECIMAL(7,2), PRIMARY KEY (id), CONSTRAINT yearsal CHECK (YEAR(hiredate) > 2004 OR salary > 80500) ); Which of the following INSERT statements will fail?()
第1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()
第2题:
An index called ORD_CUSTNAME_IX has been created on the CUSTNAME column in the ORDERS table using the following command: SQL>CREATE INDEX ord_custname_ix ON orders(custname); The ORDERS table is frequently queried using the CUSTNAME column in the WHERE clause. You want to check the impact on the performance of the queries if the index is not available. You do not want the index to be dropped or rebuilt to perform this test.Which is the most efficient method of performing this task?()
第3题:
Examine the command that is used to create a table: SQL> CREATE TABLE orders(oid NUMBER(6) PRIMARY KEY, odate DATE, ccode NUMBER (6), oamtNUMBER(10,2)) TABLESPACE users; Which two statements are true about the effect of the above command()
第4题:
space allocated in the tablespace
space required for the bitmap index on a column of the table
space remaining in the tablespace after creating the table
estimated value of the PCTFREE storage parameter
第5题:
Which two operations can be performed on an external table()
第6题:
You created the DEPT table by using the following command: CREATE TABLE scott.dept (deptno NUMBER(3), dname VARCHAR2(15), loc VARCHAR2(15) ) STORAGE (INITIAL 100K NEXT 50K MAXEXTENTS 10 PCTINCREASE 5 FREELIST GROUPS 6 FREELISTS 4);You are required to shrink the DEPT table. While performing the shrink operation, you want to ensure that the recovered space is returned to the tablespace in which the DEPT table is stored. You do not want to shrink the indexes created on the DEPT table. What will you do to shrink the SCOTT.EMP table?()
第7题:
You are using Oracle Enterprise Manager to estimate the size of a table to be created. You have typed data regarding the column names, data types, sizes of the columns, and the projected number of rows in the table. Which additional information does the Oracle Enterprise Manager return?()
第8题:
Which two operations can be performed on an external table()
第9题:
What is true about sequences?()
第10题:
The PRIMARY KEY is created along with a new index.
The PRIMARY KEY is created and it would use an existing unique index.
The PRIMARY KEY would be created in a disabled state because it is using an existing index.
The statement produces an error because the USING clause is permitted only in the CREATE TABLE command.