A table is which of the following? (Choose all that apply.)
A schema object
A non-schema object
A role
All of the above
Which of the following are schema objects? (Choose all that apply.)
SEQUENCE
PASSWORD
INDEX
ROLE
A CONSTRAINT is assigned to which of the following? (Choose all that apply.)
TABLE
SYNONYM
Which of the following are valid CREATE TABLE statements? (Choose three.)
CREATE TABLE $ORDERS (ID NUMBER, NAME VARCHAR2(30));
CREATE TABLE CUSTOMER_HISTORY (ID NUMBER, NAME VARCHAR2(30));
CREATE TABLE “Boat Inventory” (ID NUMBER, NAME VARCHAR2(30));
CREATE TABLE workSchedule (ID NUMBER, NAME VARCHAR2(30));
Which of the following may follow the reserved word CREATE to form a complete SQL statement? (Choose three.)
VIEW
CONSTRAINT
You are logged in to user FINANCE. It is currently the only schema in the entire database. The following exist in the database:
– A VIEW named VENDORS – A CONSTRAINT named VENDORS – An INDEX named CUSTOMER#ADDRESS You attempt to execute the following SQL statement:
CREATE TABLE CUSTOMER#ADDRESS (ID NUMBER, NAME VARCHAR2(30));
Which one of the following is true?
The question is flawed because you cannot have an INDEX named CUSTOMER#ADDRESS.
The question is flawed because you cannot have a VIEW and a CONSTRAINT with identical names in the same schema.
The SQL statement will fail to execute and result in an error message because you cannot create a TABLE name with the “#” character.
The SQL statement will fail to execute and result in an error message because you cannot create a TABLE that has the same name as an INDEX in the same schema.
The SQL statement will execute and the TABLE will be created.
You have a single database, with only one schema. The following four objects exist in the database:
– A TABLE named PRODUCT_CATALOG – A TABLE named ADS – A USER named PRODUCT_CATALOG – A VIEW named CONFERENCE_SCHEDULE
How many of the four objects are owned by the schema?
0
2
3
4
ROLES:
Are schema objects, but only when created from within a user account.
Are in the same namespace as CONSTRAINTS.
Are in the same namespace as TABLES.
Are in the same namespace as USERS.
The DESCRIBE, or DESC, command, can be used to do which of the following?
Show a table’s columns and the datatypes of those columns.
Show a brief paragraph describing what the table does.
Show a table’s name and who created it.
Show the data that is contained within a table.
You attempt to execute the following SQL statement:
CREATE TABLE VENDORS (VENDOR_ID NUMBER, VENDOR_NAME VARCHAR2, CATEGORY CHAR);
The execution fails because there is no precision indicated for NUMBER.
The execution fails because there is no precision indicated for VARCHAR2.
The execution fails because there is no precision indicated for CHAR.
The execution succeeds and the table is created.
The following SQL statements create a table with a column named A, and then add a row to that table.
CREATE TABLE NUMBER_TEST (A NUMBER(5,3)); INSERT INTO NUMBER_TEST (A) VALUES (3.1415); SELECT A FROM NUMBER_TEST;
What is the displayed output of the SELECT statement?
3.1415
3.142
3.141
None of the above
Which of the following SQL statements creates a table that will reject attempts to INSERT a row with NULL values entered into the POSITION_ID column?
CREATE TABLE POSITIONS (POSITION_ID NUMBER(3), CONSTRAINT POSITION_CON UNIQUE (POSITION_ID));
CREATE TABLE POSITIONS (POSITION_ID NUMBER(3), CONSTRAINT POSITION_CON PRIMARY KEY (POSITION_ID));
CREATE TABLE POSITIONS (POSITION_ID NUMBER(3), CONSTRAINT POSITION_CON REQUIRED (POSITION_ID));
Review the following SQL statement.
CREATE TABLE shipping_Order ( order_ID NUMBER, order_Year CHAR(2), customer_ID NUMBER, CONSTRAINT shipping_Order PRIMARY KEY (order_ID, order_Year));
Assume there is no table already called SHIPPING_ORDER in the database. What will be the result of an attempt to execute the preceding SQL statement?
The statement will fail because the datatype for ORDER_YEAR is a CHAR, and CHAR datatypes aren’t allowed in a PRIMARY KEY constraint.
The statement will fail because there is no precision for the ORDER_ID column’s datatype.
The table will be created, but the primary key constraint will not be created because the name does not include the “_PK” suffix.
The statement will succeed: the table will be created and the primary key will also be created.
CREATE TABLE personnel ( personnel_ID NUMBER(6), division_ID NUMBER(6), CONSTRAINT personnel_ID_PK PRIMARY KEY (personnel_ID), CONSTRAINT division_ID_PK PRIMARY KEY (division_ID));
Assume there is no table already called PERSONNEL in the database. What will be the result of an attempt to execute the preceding SQL statement?
The statement will fail because you cannot create two primary key constraints on the table.
The statement will successfully create the table and the first primary key, but not the second.
The statement will successfully create a single table and one composite primary key consisting of two columns.
The statement will successfully create the table and two primary keys.
