Question 1

Database performance is one of the least important factors in all database implementations.

Accepted Answer

Database performance is a critical factor in all database implementations. Poor database performance can lead to slow queries, long response times, and ultimately, a negative user experience. Improving database performance is an ongoing process that involves tuning the database, optimizing queries, and monitoring usage patterns.

Question 2

Coding, testing, and debugging are part of the phase of the Systems Development Life Cycle (SDLC).
A) planning
B) analysis
C) detailed systems design
D) implementation

Accepted Answer

Coding, testing, and debugging are part of the implementation phase of the SDLC, where the actual system is developed and put into operation. Planning is the first phase, followed by analysis and detailed system design.

Question 3

The assignment of access rights may restrict operations on predetermined objects such as databases, tables, views, queries, and reports.

Accepted Answer

Access rights can be assigned to restrict operations on specific objects such as databases, tables, views, queries, and reports.

Question 4

Data integrity is enforced by the database management system (DBMS) through the proper use of primary and foreign key rules.

Accepted Answer

Primary and foreign key rules are essential components for ensuring data integrity within a relational database management system. The DBMS enforces these rules to ensure that the relationships between tables are accurate and that data is not lost or corrupted. This helps to maintain the consistency, accuracy, and reliability of the data within the system.

Question 5

Physical design becomes simpler when data is distributed at different locations.

Accepted Answer

The answer of Physical design becomes simpler when data is...

Question 6

Decentralized design is typical of relatively simple, small databases and can be successfully done by a single person.

Accepted Answer

The answer of Decentralized design is typical of relatively simple,...

Question 7

The traditional Systems Development Life Cycle (SDLC) is divided into phases.
A) two
B) three
C) four
D) five

Accepted Answer

The traditional SDLC is divided into five phases: planning, analysis, design, implementation, and maintenance.

Question 8

Discovery of user requirements, existing system evaluation, and logical system design are part of the phase of the Systems Development Life Cycle (SDLC).
A) planning
B) analysis
C) detailed systems design
D) implementation

Accepted Answer

Discovery of user requirements and existing system evaluation are part of the analysis phase, and logical system design is also typically completed during this phase. The planning phase involves determining project scope and feasibility, whereas the detailed systems design phase involves creating detailed technical specifications for the system. Implementation is the phase where the actual system is built, tested, and deployed.

Question 9

The overall purpose of the database initial study is to create the conceptual design.

Accepted Answer

The overall purpose of the database initial study is to understand and define the problem the database system needs to solve, determine the scope and boundaries of the database system, and gather the general requirements for the project. The conceptual design phase comes after the initial study and involves defining the high-level structure of the database without getting into the details of the implementation.

Question 10

The testing and evaluation phase of the Database Life Cycle (DBLC) occurs after applications programming.

Accepted Answer

The testing and evaluation phase is a part of the implementation phase, which comes after the design phase and before the operation and maintenance phase of the DBLC.

Question 11

In most modern relational DBMSs, a new database implementation requires the creation of special storage-related constructs to house the end-user tables.

Accepted Answer

Most relational DBMSs require the creation of specialized storage structures, such as data files, indexes, and transaction logs, to store end-user tables. These structures are typically created using a combination of system-defined templates and user-defined parameters.

Question 12

The main purpose of a backup is to guarantee database restoration following a hardware or software failure.

Accepted Answer

The main purpose of a backup is to ensure that data can be restored in the event of hardware or software failure.

Question 13

The process of creating an information system is known as .
A) systems development
B) database development
C) network development
D) enterprise development

Accepted Answer

Systems development is the process of creating an information system, which involves various stages such as planning, analysis, design, implementation, and maintenance. Database development and network development are subsets of systems development, while enterprise development refers to the development of a business or organization as a whole.

Question 14

The initial assessment and the feasibility study are part of the Systems Development Life Cycle's (SDLC's) ? phase.
A) planning
B) analysis
C) detailed systems design
D) implementation

Accepted Answer

The planning phase of the SDLC includes activities such as identifying the goals and objectives of the project, determining feasibility, identifying stakeholders, and developing a project plan. The initial assessment and feasibility study are part of this planning phase, as they help to determine whether the project is viable and should be pursued.

Question 15

After the initial declarations in Database Life Cycle (DBLC), the database designer must carefully probe in order to generate additional information that will help define the problem within the larger framework of company operations.

Accepted Answer

This statement is true. After initial declarations, the database designer must gather more information about the company operations in order to define the problem more precisely.

Question 16

Evaluation of database performance is rendered easier by the fact there are no standards to measure it.

Accepted Answer

The statement is false. Without standards to measure database performance, evaluation is actually more difficult because there is no objective way to compare databases or determine if they are performing well. Standard metrics, such as response times and throughput, are often used to compare performance between databases.

Question 17

The Systems Development Life Cycle (SDLC) is a sequential process rather than an iterative process.

Accepted Answer

The Systems Development Life Cycle (SDLC) is an iterative process that involves going through different phases repeatedly until a satisfactory system is obtained. The phases include planning, analysis, design, implementation, and maintenance. Each phase may require revisiting the previous phase to ensure the system meets the requirements and objectives.

Question 18

The database administrator must be prepared to perform routine maintenance activities within the database.

Accepted Answer

Performing routine maintenance activities within the database is an important responsibility of the database administrator. This includes tasks such as monitoring database performance, optimizing query execution, and ensuring backups are taken regularly.

Question 19

To analyze the company situation, the database designer must discover what the company's operational components are, how they function, and how they interact.

Accepted Answer

This statement is true. To design an effective database, it is essential for the designer to understand the company's operational components, their functions, and interactions. This allows the designer to create a database structure that accurately represents the business processes and helps improve operational efficiency.

Question 20

Installation and fine tuning are part of the phase of the Systems Development Life Cycle (SDLC).
A) planning
B) analysis
C) detailed systems design
D) implementation

Accepted Answer

Installation and fine tuning are part of the implementation phase of the SDLC, where the actual system is installed, tested, and made operational. Planning involves defining the problem and identifying solutions, analysis involves gathering information on requirements and constraints, and detailed systems design involves creating a detailed plan for system components and processes.

Quiz 9: Database Design