Information Technology
Textbook Exam Questions
Course Introduction
Information Technology is an interdisciplinary course that explores the principles, applications, and impact of computing and digital systems in various organizational and societal contexts. Students will gain foundational knowledge in computer hardware, software, networking, databases, and cybersecurity, as well as practical skills in solving technological problems. The course also examines the ethical, legal, and social implications of technology, providing students with insight into emerging trends and preparing them for careers in a rapidly evolving digital world.
Recommended Textbook
Database Systems Design Implementation and Management 11th Edition by Carlos Coronel
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15 Chapters
1318 Verified Questions
1318 Flashcards
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Chapter 1: Database Systems
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Sample Questions
Q1) Data and information are essentially the same thing.
A)True
B)False
Answer: False
Q2) Data anomaly is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions.
A)True
B)False
Answer: False
Q3) The response of the DBMS to a query is the .
A) ad hoc query
B) ad hoc response
C) query result set
D) integrated view of the data
Answer: C
Q4) Corporations use only structured data.
A)True
B)False
Answer: False
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Chapter 2: Data Models
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Sample Questions
Q1) From a database point of view, the collection of data becomes meaningful only when it reflects properly defined_____.
A) business rules
B) business norms
C) business goals
D) business plans
Answer: A
Q2) The data model is said to be a semantic data model.
A) relational
B) network
C) object-oriented
D) entity relationship
Answer: C
Q3) is a language based on OO concepts that describes a set of diagrams and symbols used to graphically model a system.
Answer: UML (Unified Modeling Language)
Unified Modeling Language (UML)
Unified Modeling Language
UML
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Page 4
Chapter 3: The Relational Database Model
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Sample Questions
Q1) When you define a table's primary key, the DBMS automatically creates a(n) index on the primary key column(s) you declared.
A) key
B) composite
C) unique
D) primary
Answer: C
Q2) relationships can be implemented by creating a new entity in 1:M relationships with the original entities.
A) 1:N
B) M:1
C) M:N
D) 1:1
Answer: C
Q3) A key is defined as a key that is used strictly for data retrieval purposes.
A) lookup
B) foreign
C) candidate
D) secondary
Answer: D
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Chapter 4: Entity Relationship Er Modeling
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Sample Questions
Q1) To simplify the conceptual design, most higher-order relationships are decomposed into appropriate equivalent? relationships whenever possible.
A) unary
B) binary
C) strong
D) weak
Q2) If Tiny College has some departments that are classified as "research only" and do not offer courses, the COURSE entity of the college database would be the DEPARTMENT entity.
A) existence-dependent on B) independent of C) mandatory for D) optional to
Q3) are underlined in an ER diagram.
Q4) A relationship is difficult to establish if only one side of the relationship is known.
Q5) A weak entity must be -dependent.
Q6) A(n) relationship is also known as an identifying relationship.
Q7) The Chen notation identifies a weak entity by using a double-walled entity .
Page 6
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Chapter 5: Advanced Data Modeling
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Sample Questions
Q1) In specialization hierarchies with multiple levels of supertype and subtypes, a lower-level subtype can inherit only a few of the attributes and relationships from its upper-level supertypes.
A)True
B)False
Q2) A subtype contains attributes that are common to all of its supertypes.
A)True
B)False
Q3) The completeness constraint can be partial or total.
A)True
B)False
Q4) A occurs when there is one entity in two 1:M relationships to other entities, thus producing an association among the other entities that is not expressed in the model.
A) surrogate primary key
B) time-variant data
C) design trap
D) fan trap
Q5) The is the result of adding more semantic constructs to the original entity relationship (ER) model.
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Chapter 6: Normalization of Database Tables
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Sample Questions
Q1) In a(n) diagram, the arrows above the attributes indicate all desirable dependencies.
A) Chen
B) dependency
C) functionality
D) ER
Q2) A table where every determinant is a candidate key is said to be in .
A) BCNF
B) 2NF
C) 1NF
D) 4NF
Q3) When a table contains only one candidate key, are considered to be equivalent.
A) the 1NF and the 2NF
B) the 3NF and the BCNF
C) the 4NF and the 3NF
D) the BCNF and the DKNF
Q4) refers to the level of detail represented by the values stored in a table's row.
Q5) The combination of and ER modeling yields a useful ERD, whose entities may now be translated into appropriate table structures.
Q6) is a process to help reduce the likelihood of data anomalies.
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Chapter 7: Introduction to Structured Query Language Sql
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Sample Questions
Q1) The SQL command that modifies an attribute's values in one or more table's rows is
A) INSERT
B) SELECT
C) COMMIT
D) UPDATE
Q2) Date procedures are often more software-specific than other SQL procedures.
A)True
B)False
Q3) U.S. state abbreviations are always two characters, so (2) is a logical choice for the data type representing a state column.
Q4) UPDATE tablename *****
[WHERE conditionlist];
The command replaces the ***** in the syntax of the UPDATE command, shown above.
A) SET columnname = expression
B) columnname = expression
C) expression = columnname
D) LET columnname = expression
Q5) A table can be deleted from the database by using the command.
Q6) In a 1:M relationship, a user must always create the table for the side first.
Page 9
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Chapter 8: Advanced Sql
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Sample Questions
Q1) Assume you are using the MINUS 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 MINUS operator?
A) 0
B) 2
C) 8
D) 10
Q2) Every PL/SQL block must be given a name.
A)True
B)False
Q3) A statement-level trigger is assumed if a designer omits the FOR EACH ROW keywords.
A)True
B)False
Q4) Triggers can only be used to update table values.
A)True
B)False
Q5) How are triggers critical to proper database operation and management?
Page 10
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Chapter 9: Database Design
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Sample Questions
Q1) is the process of determining the data storage organization and data access characteristics of the database to ensure its integrity, security, and performance.
A) Conceptual design
B) Network design
C) Logical design
D) Physical design
Q2) The system and operational costs are addressed by the during the planning phase of the Systems Development Life Cycle (SDLC).
Q3) The describes the general conditions in which a company operates, its organizational structure, and its mission.
Q4) The system's defines the extent of the design according to operational requirements.
Q5) The advent of very sophisticated application generators and has substantially decreased coding and testing time.
Q6) The goal is to design an enterprise-wide database based on a specific data model but independent of physical-level details.
Q7) The first step in is to discover the data element characteristics.
Q8) What are the factors affecting the purchasing decision for DBMS software?
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Chapter 10: Transaction Management and Concurrency Control
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Sample Questions
Q1) Incomplete or improper transactions can have a devastating effect on database integrity.
A)True
B)False
Q2) A lock allows concurrent transactions to access different rows of the same table.
A) database-level
B) table-level
C) page-level
D) row-level
Q3) What is a rule that applies to the two-phase locking protocol?
A) Two transactions cannot have conflicting locks.
B) No unlock operation can precede a lock operation in a different transaction.
C) No data is affected until all locks are released.
D) No data is affected until the transaction is in its locked position.
Q4) -level locks are less restrictive than database-level locks, but they create traffic jams when many transactions are waiting to access the same table.
Q5) The rule states that only one transaction at a time can own an exclusive lock on the same object.
12
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Chapter 11: Database Performance Tuning and Query
Optimization
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Sample Questions
Q1) The primary factor in determining the most efficient access plan is the I/O cost.
A)True
B)False
Q2) A system will perform best when its hardware and software resources are .
Q3) In RAID level 5,:
A) the data and the parity data are striped across separate drives.
B) the data blocks are spread over separate drives and are duplicated.
C) the array requires a minimum of two drives and is known as a striped array.
D) the array requires a minimum of five drives and is known as duplexing.
Q4) The data cache caches system catalog data and the contents of the indexes. A)True
B)False
Q5) are ordered sets of values that are crucial in speeding up data access.
Q6) is a measure of the likelihood that an index will be used in query processing.
Q7) A is good for simple and fast lookup operations based on equality conditions.
Q8) To work with data, the DBMS must retrieve the data from permanent storage and place it in RAM.
A)True
B)False Page 13
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Page 14
Chapter 12: Distributed Database Management Systems
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Sample Questions
Q1) transparency is the highest level of transparency. The end user or programmer does not need to know that a database is partitioned.
A) Performance
B) Fragmentation
C) Location
D) Local mapping
Q2) Explain the three types of operations defined by the DO-UNDO-REDO protocol.
Q3) The transaction processor (TP) is the software component found in each computer that requests data.
A)True
B)False
Q4) One of the advantages of a distributed database management system (DDBMS) is less danger of a single- failure.
Q5) The distributed database system must be of the computer hardware system.
Q6) Explain the difference between homogeneous and heterogeneous distributed database management systems (DDBMS).
Q7) A fully distributed database management system must perform all of the functions of a centralized database management system (DBMS). What are these functions?
Page 15
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Chapter 13: Business Intelligence and Data Warehouses
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Sample Questions
Q1) _____ provide a unified, single point of entry for information distribution.
A) Decision support systems
B) Portals
C) Data warehouses
D) Dashboards
Q2) can serve as a test vehicle for companies exploring the potential benefits of data warehouses.
A) Data networks
B) Data marts
C) Data cubes
D) OLAPs
Q3) Fact and dimension tables are related by keys.
A) shared
B) primary
C) foreign
D) linked
Q4) A data _____ is a centralized, consolidated database that integrates data derived from the entire organization and from multiple sources with diverse formats.
Q5) Describe the use of SQL in relation to ROLAP.
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Chapter 14: Database Connectivity and Web Technologies
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Sample Questions
Q1) An API (application programming interface) is defined as a set of routines, protocols, and tools for building software applications.
A)True
B)False
Q2) 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
Q3) A good API makes it easy to develop a program by providing all of the building blocks.
A)True
B)False
Q4) In the ADO.NET framework, the object is the in-memory representation of the data in the database.
A) Command
B) DataReader
C) DataAdapter
D) DataSet
Q5) What are the components in the basic ODBC architecture?
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Chapter 15: Database Administration and Security
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Sample Questions
Q1) Explain conflict and problem resolution as part of the DBA's end-user support services.
Q2) "All users must have passwords" is an example of a .
A) rule
B) policy
C) standard
D) procedure
Q3) A(n) plan is a set of instructions generated at application compilation time that predetermines how the application will connect to and communicate with the database at run time.
A) access
B) completion
C) application
D) communications
Q4) In the context of the data-information-decision cycle, decisions made by high-level managers trigger actions in an organization's:
A) lower levels.
B) top levels.
C) target markets.
D) customer base.
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