1D0-541 Exam Dumps : CIW v5 Database Design Specialist

Second normal form

First normal form

Boyce-Codd normal form

Third normal form

STUDENT( Student_Number: integer NOT NULL Name:

variable length character string length 20 NOT NULL)

Primary Key Student_Number CLASS( Class_Num: integer

NOT NULL Class_Name: integer NOT NULL) Primary Key

Class_Num

STUDENT( Student_Number: integer NOT NULL Name:

variable length character string length 20 NOT NULL)

Primary Key Student_Number CLASS( Class_Num: integer

NOT NULL Class_Name: integer NOT NULL) Primary Key

Class_Num Foreign Key Class_Num References STUDENT

STUDENT( Student_Number: integer NOT NULL Name:

variable length character string length 20 NOT NULL)

Primary Key StudenMMumber STU_CLASS(

Student_Number: integer NOT NULL Class_Num: integer

NOT NULL) Primary Key Student_Number CLASS(

Class_Num: integer NOT NULL Class_Name: integer NOT

NULL) Primary Key Class_Num

INSERT INTO Atlanta_Customers

VALUES( SELECT * FROM

Customer s WHERE Sales_Office =

Atlanta

INSERT INTO Atlanta_Customers

SELECT * FROM Customers

WHERE Sales_Office = Atlanta

INSERT INTO Atlanta_Customers SELECTCust_No,

Cust_Name, Satisfaction_Rate, Sales_Rep_No FROM Customers

WHERE Sales_Office = Atlanta

INSERT INTO Atlanta_Customers SELECT Cust_No,

Cust_Name, Sales_Office, Sales_Rep_No FROM Customers

WHERE Sales_Office = Atlanta

It is the primary key for an entity.

It uniquely identifies every instance of an entity.

One or more keys are joined together to form a composite key.

One or more keys may be used to form a primary key.