Database System Design and Management
Part 1: True False /Multiple Choicesebject :
T/F
1) A disadvantage of the relational database management system (RDBMS) is its inability to hide
the complexities of the relational model from the user.
2) In an SQL-based relational database, rows in different tables are related based on common
values
in common attributes.
3) The external model is the representation of the database as seen by the DBMS.
4) Composite attributes make it easier to facilitate detailed queries.
5) . To implement a small database, a database designer must know the "1" and the "M" sides of
each relationship and whether the relationships are mandatory or optional.
6) The COMMIT command does not permanently save all changes. In order to do that, you must
use
SAVE.
7) You can select partial table contents by naming the desired fields and by placing restrictions on
the rows to be included in the output.
8) SQL allows the use of logical restrictions on its inquiries such as OR, AND, and NOT.
9) The primary objective in database design is to create complete, normalized, nonredundant, and
fully integrated conceptual, logical, and physical database models.
10) The Systems Development Life Cycle (SDLC) is a sequential process rather than an iterative
process.
Multiple Choice
1) SQL command that allows a user to permanently save data changes is _____.
A. Save B. Commit C. Update D. Deposit
2) An entity is said to be _____-dependent if it can exist in the database only when it is associated
with another related entity occurrence.
A. Existence B. Relationship
c. Business D. Data
3) When using a(n) _____ join, only rows from the tables that match on a common
value are returned.
A. Left B. Inner C. Outer D. Right
4) The maintenance and evolution phase of the Database Life Cycle (DBLC) involves.
_____.
A. Defining objectives
B. Introducing changes
C. Testing database
D. Installing Database
5) User-access management is a subset of _____.
A. Authentication
B. Authorization management
C. Managerial control
D. Password protection.
Database System Design and Management Part 1 True False Mu.pdf
1. Database System Design and Management
Part 1: True False /Multiple Choicesebject :
T/F
1) A disadvantage of the relational database management system (RDBMS) is its inability to hide
the complexities of the relational model from the user.
2) In an SQL-based relational database, rows in different tables are related based on common
values
in common attributes.
3) The external model is the representation of the database as seen by the DBMS.
4) Composite attributes make it easier to facilitate detailed queries.
5) . To implement a small database, a database designer must know the "1" and the "M" sides of
each relationship and whether the relationships are mandatory or optional.
6) The COMMIT command does not permanently save all changes. In order to do that, you must
use
SAVE.
7) You can select partial table contents by naming the desired fields and by placing restrictions on
the rows to be included in the output.
8) SQL allows the use of logical restrictions on its inquiries such as OR, AND, and NOT.
9) The primary objective in database design is to create complete, normalized, nonredundant, and
fully integrated conceptual, logical, and physical database models.
10) The Systems Development Life Cycle (SDLC) is a sequential process rather than an iterative
process.
Multiple Choice
1) SQL command that allows a user to permanently save data changes is _____.
A. Save B. Commit C. Update D. Deposit
2) An entity is said to be _____-dependent if it can exist in the database only when it is associated
with another related entity occurrence.
A. Existence B. Relationship
c. Business D. Data
3) When using a(n) _____ join, only rows from the tables that match on a common
value are returned.
A. Left B. Inner C. Outer D. Right
2. 4) The maintenance and evolution phase of the Database Life Cycle (DBLC) involves.
_____.
A. Defining objectives
B. Introducing changes
C. Testing database
D. Installing Database
5) User-access management is a subset of _____.
A. Authentication
B. Authorization management
C. Managerial control
D. Password protection
