CASCADE
UNIQUE
NONUNIQUE
CHECK
PRIMARY KEY
CONSTANT
NOT NULL
第1题:
Which two statements are true about constraints? ()
第2题:
Which statement adds a constraint that ensures the CUSTOMER_NAME column of the CUSTOMERS table holds a value?()
第3题:
private
final
static
int
abstract
第4题:
broadcast hellos
Level 1 LAN hellos
Point-to-point hellos
Level 2 point-to-point hellos
第5题:
nvarchar(100) NULL
nvarchar(max) NOT NULL
nvarchar(100) NOT NULL
nvarchar(100) SPARSE NULL
第6题:
Database Service
Data Service
Java Service
Security Service
.NET Service
SOA Service
第7题:
The UNIQUE constraint does not permit a null value for the column.
A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.
The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.
The NOT NULL constraint ensures that null values are not permitted for the column.
第8题:
string
character
integer
calendar
numeric
translation
date
conversion
第9题:
Designated port
Nonswitch port
Switch port
Nonroot port
Nondesignated port
Root port
第10题:
The constraint remains valid.
The index on the constraint is dropped.
It allows the loading of data into the table using SQL*Loader.
New data conforms to the constraint, but existing data is not checked
It allows the data manipulation on the table using INSERT/UPDATE/DELETE SQL statements.
第11题:
ALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;
ALTER TABLE customers MODIFY CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;
ALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn NOT NULL;
ALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn IS NOT NULL;
ALTER TABLE customers MODIFY name CONSTRAINT cust_name_nn NOT NULL;
ALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name NOT NULL;
第12题:
Error
Event
Object
Exception
Throwable
Runtime Exception
第13题:
You executed the following code: SQL> CERATE TABLE COUNTRY (COUNTRY_ID CHAR(2) CONSTRAINT COUNTRY_ID_nn NOT NULL, COUNTRY_NAME VARCHAR2(20), CURRENCY_NAME VARCHAR2(20), CONSTRAINT COUNTRY_ID_PK PRIMARY KEY (COUNTRY_ID)) ORGANIZATION INDEX; Which types of tables will be created automatically?()
第14题:
You need to design the restrictions on the Bank.Customers table. Which three actions should you perform?()
第15题:
Magic
Plain
Check
List item
Divider
第16题:
Register
Register-Stop
Join/Prune
Reject
Register-Prune
Register-Join
第17题:
PLSQL_BLOCK
EXECUTABLE
JAVA_STORED_PROCEDURE
STORED_PROCEDURE
EXTERNAL
第18题:
Design a trigger that verifies that the first names and surnames are not empty strings.
Design a check constraint that verifies that the first names and surnames are not empty strings.
Design a check constraint that uses a CLR user-defined function to verify that either the phone number is a null value or the format of the phone number is valid.
Design a trigger that uses a CLR user-defined function to verify that either the phone number is a null value or the format of the phone number is valid.
Design a check constraint that ensures that the phone number cannot be changed from a valid format to a null value or to an invalid format.
Design a trigger that ensures that the phone number cannot be changed from a valid format to a null value.
第19题:
TLV 10 Authentication
TLV 1 Area Addresses
TLV 211 Graceful Restart
TLV 137 Dynamic Hostname Resolution
TLV 14 ABRs
第20题:
Error
Event
Object
Exception
Throwable
RuntimeException
第21题:
row level
block level
object level
schema level
database level
第22题:
PLSQL_BLOCK PLSQL
EXECUTABLE
JAVA_STORED_PROCEDURE
STORED_PROCEDURE
EXTERNAL
第23题:
CASCADE
UNIQUE
NONUNIQUE
CHECK
PRIMARY KEY
CONSTANT
NOT NULL
第24题:
journal table
clustered table
mapping table
partitioned table