Data Modeling and Database Design Exam Practice Tests - 1320 Verified Questions

Data Modeling and Database Design Exam Practice Tests https://quizplus.com/study-set/1336 15 Chapters 1320 Verified Questions

Data Modeling and Database Design Exam Practice Tests Course Introduction Data Modeling and Database Design is a foundational course that provides students with the principles and practical skills necessary to efficiently structure and organize data within modern information systems. The course covers key concepts such as data models (including the relational model), entity-relationship diagrams, normalization, and the theoretical underpinnings of database management systems. Students learn the process of translating real-world scenarios into effective data representations and designing robust, scalable database schemas. Emphasis is placed on best practices in database design, data integrity, and optimizing query performance, preparing learners to tackle real-world challenges in developing and managing reliable databases for business and technology applications.

Recommended Textbook

Database Principles Fundamentals of Design Implementation and Management international 1

Available Study Resources on Quizplus 15 Chapters 1320 Verified Questions 1320 Flashcards Source URL: https://quizplus.com/study-set/1336

Page 2

Chapter 1: The Database Approach Available Study Resources on Quizplus for this Chatper 70 Verified Questions 70 Flashcards Source URL: https://quizplus.com/quiz/26651

Sample Questions Q1) What are some reasons for studying file systems?

Answer: A brief explanation of the evolution of file system data processing can be helpful in understanding the data access limitations that databases attempt to overcome.

Understanding these limitations is relevant to database designers and developers because

database

technologies

do

not

make

these

problems

magically

disappear-database technologies simply make it easier to create solutions that avoid these problems. Creating database designs that avoid the pitfalls of earlier systems requires that the designer understand these problems and how to avoid them; otherwise, the database technologies are no better (and are potentially even worse!) than the technologies and techniques they have replaced.

Q2) Describe what metadata are and what value they provide to the database system.

Answer: The metadata describe the data characteristics and the set of relationships that links the data found within the database. For example, the metadata component stores information such as the name of each data element, the type of values (numeric, dates, or text) stored on each data element, and whether the data element can be left empty.

The metadata provide information that complements and expands the value and use of the data. In short, metadata present a more complete picture of the data in the database. Given the characteristics of metadata, you might hear a database described as a "collection of self-describing data."

To view all questions and flashcards with answers, click on the resource link above.

Page 3

Chapter 2: Database Development Process Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26652

Sample Questions Q1) The implementation phase of database design includes creating the database storage structure and loading the database, but does not provide for data management.

A)True B)False Answer: False Q2) Database performance is one of the least important factors in all database implementations.

A)True B)False Answer: False Q3) In the detailed systems design phase, the designer starts the design of the system's processes.

A)True B)False Answer: False Q4) When selecting DBMS ____________________, consider processor(s), RAM, disk space, and so on.

Answer: hardware To view all questions and flashcards with answers, click on the resource link above.

Page 4

Chapter 3: Data Models Available Study Resources on Quizplus for this Chatper 70 Verified Questions 70 Flashcards Source URL: https://quizplus.com/quiz/26653

Sample Questions Q1) The relational model is hardware-dependent and software-independent.

A)True B)False Answer: False Q2) In the ____ model, the basic logical structure is represented as an upside-down tree.

A) hierarchical B) network C) relational D) entity relationship Answer: A Q3) What do business rules require to be effective?

Answer: To be effective, business rules must be easy to understand and widely disseminated to ensure that every person in the organization shares a common interpretation of the rules. Business rules describe, in simple language, the main and distinguishing characteristics of the data as viewed by the company.

Q4) In ____________________, relationships are represented by a diamond connected to the related entities through a relationship line.

Answer: Chen notation To view all questions and flashcards with answers, click on the resource link above.

Page 5

Chapter 4: Relational Model Characteristics Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26654

Sample Questions Q1) The ____ constraint can be placed on a column to ensure that every row in the table has a value for that column.

A) HAS VALUE B) NOT NULL C) MUST HAVE VALUE D) NOT EMPTY Q2) ____________________ relationships cannot be implemented as such in the relational model.

Q3) Fortunately, the problems inherent in the ____________________ relationship can easily be avoided by creating a composite entity.

Q4) Tables within a database share common attributes that enable the tables to be linked together.

A)True B)False Q5) Another name for a composite entity is a ____ entity.

A) bridge B) linked C) directive D) referring 6 click on the resource link above.

To view all questions and flashcards with Page answers,

Chapter 5: Beginning Structured Query Language Sql Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26655

Sample Questions Q1) Oracle users can use the Access QBE (query by example) query generator.

A)True B)False Q2) A common practice is to create a(n) ____________________ on any field that is used as a search key, in comparison operations in a conditional expression, or when you want to list rows in a specific order.

Q3) A table can be deleted from the database by using the ____ command.

A) DROP TABLE B) DELETE TABLE C) MODIFY TABLE D) ERASE TABLE Q4) Data type selection is usually dictated by the nature of the data and by the intended use.

A)True B)False Q5) The SQL character data format(s) is(are) ____.

A) CHAR and VARCHAR B) VARCHAR only C) Alphanumeric D) CHAR only

Page 7

To view all questions and flashcards with answers, click on the resource link above.

Chapter 6: Procedural Language Sql and Advanced Sql Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26656

Sample Questions Q1) A row-level trigger requires use of the ____________________ keywords. This type of trigger is executed once for each row affected by the triggering statement.

Q2) If the DBMS does not support the INTERSECT statement, you can use a(n) ____________________ subquery to achieve the same result.

Q3) Assume you are using the UNION ALL operator to combine the results from two tables with identical structure, CUSTOMER and CUSTOMER_2. The CUSTOMER table contains 10 rows, while the CUSTOMER_2 table contains 7 rows. Customers Dunne and Olowski are included in the CUSTOMER table as well as in the CUSTOMER_2 table. How many records are returned when using the UNION ALL operator?

A) 7 B) 10 C) 15 D) 17 Q4) The Oracle ____ function returns the current date.

A) DATE B) SYSDATE C) CURRENT_DATE D) TO_DATE To view all questions and flashcards with answers, click on the resource link above.

Page 8

Chapter 7: Data Modeling With Entity Relationship Diagrams Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26657

Sample Questions Q1) A(n) ____________________ relationship is also known as an identifying relationship.

Q2) Identifying the attributes of the entities helps you better understand the ____________________ among entities.

Q3) What is a ternary relationship? Provide some example business rules that specify the need for a ternary or higher-order relationship.

Q4) In an ER diagram, primary keys are usually bolded.

A)True B)False Q5) The Crow's Foot model is more ____________________-oriented than the Chen model.

Q6) A relationship is identified by a name that describes the relationship.

A)True B)False Q7) In Chen notation, there is no way to represent cardinality.

A)True B)False

Page 9

Q8) Connectivities and cardinalities are established by business rules.

A)True B)False

To view all questions and flashcards with answers, click on the resource link above.

Page 10

Chapter 8: Data Modeling Advanced Concepts Available Study Resources on Quizplus for this Chatper 70 Verified Questions 70 Flashcards Source URL: https://quizplus.com/quiz/26658

Sample Questions Q1)

The

main

concern

with

redundant

relationships

is

that

they

remain

____________________ across the model.

Q2) Generalization is based on grouping unique characteristics and relationships of the subtypes.

A)True B)False Q3) Describe specialization and generalization.

Q4) Overlapping subtypes are subtypes that contain a unique subset of the supertype entity set.

A)True B)False Q5) Partial completeness is symbolized by ____.

A) a dotted line B) two dashed lines C) a circle over a single line D) a circle over a double line Q6) Entity supertypes and subtypes are organized in a specialization hierarchy.

A)True B)False Page 11 Q7) In what two cases are composite primary keys particularly useful?

To view all questions and flashcards with answers, click on the resource link above.

Chapter 9: Normalizing Database Designs Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26659

Sample Questions Q1) Normalization represents a micro view of the entities within the ERD. A)True B)False Q2) Data redundancy produces ____.

A) slower lookups B) robust design C) efficient storage use D) data integrity problems Q3) Normalization should be part of the design process.

A)True B)False Q4) ____ databases reflect the ever-growing demand for greater scope and depth in the data on which decision support systems increasingly rely.

A) Normalized B) Data warehouse C) Temporary D) Report Q5) Explain how database designers design and normalize databases.

Q6)

The

problem

with

transitive

____________________.

dependencies

is

that

they

still

yield

Page 12

To view all questions and flashcards with answers, click on the resource link above.

data

Chapter 10: Distributed Databases Available Study Resources on Quizplus for this Chatper 70 Verified Questions 70 Flashcards Source URL: https://quizplus.com/quiz/26660

Sample Questions Q1) The ____________________ fragment condition indicates that each row is unique, regardless of the fragment in which it is located.

Q2) ____ transparency exists when the end user or programmer must specify the database fragment names but does not need to specify where these fragments are located.

A) Transaction B) Location C) Local mapping D) Fragmentation Q3) Describe performance transparency and heterogeneity transparency.

Q4) The database description, known as the distributed ____________________ schema, is the common database schema used by local TPs to translate user requests into subqueries (remote requests) that will be processed by different DPs. Q5)

Typically,

__________________________________________________

the scenario

requires a network file server running conventional applications that are accessed through a network.

Q6) What is transaction transparency? What are some of the basic concepts that you should know to understand how transactions are managed in a DDBMS? Page 13 To view all questions and flashcards with answers, click on the resource link above.

Chapter 11: Interacting With Databases Through the Web Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26661

Sample Questions Q1) Extending the Web server functionality implies that the Web server and the Web-to-database middleware will properly communicate with each other.

A)True B)False Q2) ____________________ Web pages are at the heart of current generation Web sites.

Q3) A server-side extension ____.

A) provides its services to the Web server in a way that is totally transparent to the client browser B) must be downloaded and installed in the client computer C) is only available for servers running Windows 2000 or greater D) is not required to access a database over the Internet Q4) What are the components in the basic ODBC architecture?

Q5) An API uses script files that perform specific functions on the client's parameters that are passed to the Web server.

A)True B)False Q6) Java applications are compiled and stored in the Web browser.

A)True B)False

Page 14

To view all questions and flashcards with answers, click on the resource link above.

Chapter 12: Database Administration and Security Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26662

Sample Questions Q1) The advent of the DBMS and its shared view of data produced a new level of data management sophistication and led the DP department to evolve into a(n) _________________________ department.

Q2) There is a growing trend toward ____ in the data-management function.

A) cross-training B) encapsulation C) specialization D) centralization Q3) A(n) ____________________ physically stores the database's data.

Q4) The DBA's ____ role covers activities involving the use of the DBMS. A) administrative B) arbitration C) technical D) managerial Q5)

The

general

coordinator

of

all

DBAs

is

sometimes

known

as

the

____________________ administrator.

Q6) A full backup, or database dump, produces a complete copy of the entire database.

A)True B)False Page 15 To view all questions and flashcards with answers, click on the resource link above.

Chapter 13: Managing Transactions and Concurrency Available Study Resources on Quizplus for this Chatper 70 Verified Questions 70 Flashcards Source URL: https://quizplus.com/quiz/26663

Sample Questions Q1) The ____________________ interleaves the execution of database operations to ensure serializability.

Q2) A consistent database state is ____.

A) one in which all tables have foreign keys B) one in which all data integrity constraints are satisfied C) one in which all tables are normalized D) one in which all SQL statements only update one table at a time Q3) Most real-world database transactions are formed by only one database request.

A)True B)False Q4) Although the DBMS is designed to recover a database to a previous consistent state (when an interruption prevents the completion of a required set of transactions), the transactions themselves are defined by the end user or programmer and must be ____________________ correct.

Q5) ____________________ can take place at any of the following levels: database, table, page, row, or field.

Q6) The DBMS keeps several copies of ____________________ to ensure that a disk physical failure will not impair the DBMS's ability to recover data.

Q7) How does a shared/exclusive lock schema increase the lock manager's overhead?

Page 16 To view all questions and flashcards with answers, click on the resource link above.

Chapter 14: Managing Database and Sql Performance Available Study Resources on Quizplus for this Chatper 70 Verified Questions 70 Flashcards Source URL: https://quizplus.com/quiz/26664

Sample Questions Q1) When setting optimizer hints, ____ forces the optimizer to use the P_QOH_NDX index to process this query.

A) ALL_ROWS B) FIRST_ROWS C) INDEX(P_QOH_NDX) D) OPTIMIZATION_ROWS Q2) Knowing the sparsity of a column helps you decide whether the use of ____ is appropriate.

A) query processing B) query optimization C) an index D) a full table scan Q3) All data in a database are stored in ____ files.

A) table B) data C) RAM D) system Q4) Once an SQL statement is transformed, the DBMS creates what is commonly known as a(n) ____________________ plan.

Q5) List and describe some typical DBMS processes.

Page 17 To view all questions and flashcards with answers, click on the resource link above.

Chapter 15: Databases for Decision Support Available Study Resources on Quizplus for this Chatper 100 Verified Questions 100 Flashcards Source URL: https://quizplus.com/quiz/26665

Sample Questions Q1) Analyzing decision support data to generate information is part of ____.

A) data warehousing B) very large database systems C) business intelligence D) distributed processing Q2) Queries against operational data typically are broad in scope and high in complexity.

A)True B)False Q3) Data ____ implies that all business entities, data elements, data characteristics, and business metrics are described in the same way throughout the enterprise.

A) volatility B) time-variation C) subject-orientation D) integration Q4) Because a data cube's dimensions are predefined, all cells are populated.

A)True B)False Q5) What is a data cube?

18 click on the resource link above.

To view all questions and flashcards withPage answers,