Business Information Systems
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Course Introduction
Business Information Systems explores the integration of information technology with business operations to support decision-making, enhance productivity, and achieve organizational goals. The course introduces students to the fundamental concepts of information systems, including databases, networks, enterprise systems, and the role of IT in business processes. Emphasis is placed on understanding how businesses leverage technology for competitive advantage, managing digital resources, implementing information systems solutions, and addressing ethical, legal, and security issues related to information management. Through case studies and practical assignments, students develop skills to analyze business problems and recommend information system strategies that align with organizational objectives.
Recommended Textbook
Database Systems Design Implementation and Management 13th Edition by Carlos Coronel
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Page 2
Chapter 1: Database Systems
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Q1) The term _____ refers to scattered locations storing the same basic data. Answer: islands of information
Q2) Data constitute the building blocks of information.
A)True
B)False
Answer: True
Q3) _____ is data about data through which the end-user data are integrated and managed.
Answer: Metadata
Q4) Web and mobile technologies that enable "anywhere, anytime, always on" human interactions are forms of _____.
Answer: social media
Q5) A data warehouse can store data derived from many sources.
A)True
B)False
Answer: True
Q6) _____ databases focus primarily on storing data used to generate information required to make tactical or strategic decisions.
Answer: Analytical
Page 3
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Chapter 2: Data Models
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Q1) The external model is the representation of the database as "seen" by the DBMS.
A)True
B)False
Answer: False
Q2) The _____ data model uses the concept of inheritance.
A) relational
B) network
C) object-oriented
D) entity relationship
Answer: C
Q3) A disadvantage of the relational database management system (RDBMS) is its inability to hide the complexities of the relational model from the user.
A)True
B)False
Answer: False
Q4) Today, most relational database products can be classified as object/relational.
A)True
B)False
Answer: True
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Chapter 3: The Relational Database Model
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Q1) A(n) _____ is an orderly arrangement used to logically access rows in a table.
A) primary rule
B) superkey
C) relationship
D) index
Answer: D
Q2) Each table in a relational database must have a primary key.
A)True
B)False
Answer: True
Q3) _____ 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
Q4) A(n) _____ links tables on the basis of an equality condition that compares specified columns of each table.
Answer: equijoin
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Chapter 4: Entity Relationship Er Modeling
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Q1) In Crow's Foot notation, an optional relationship between entities is shown by drawing a(n) _____ on the side of the optional entity.
Q2) A _____ relationship exists when three entities are associated.
A) unary
B) strong
C) ternary
D) weak
Q3) If an employee within an EMPLOYEE entity has a relationship with itself, that relationship is known as a _____ relationship.
A) self
B) self-referring
C) looping
D) recursive
Q4) A _____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.
A) strong
B) weak
C) business
D) child
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Chapter 5: Advanced Data Modeling
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Q1) In the context of total completeness, in a(n) _____, every supertype occurrence is a member of only one subtype.
A) foreign key constraint
B) nonunique constraint
C) overlapping constraint
D) disjoint constraint
Q2) At the implementation level, the supertype and its subtype(s) depicted in a specialization hierarchy maintain a(n) _____ relationship.
A) self-referencing
B) 1:1
C) 1:M
D) M:N
Q3) If one exists, a data modeler uses a _____ as the primary key of the entity being modeled.
A) foreign key
B) combination key
C) surrogate key
D) natural identifier
Q4) Differentiate between specialization and generalization.
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Chapter 6: Normalization of Database Tables
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Q1) The price paid for increased performance through denormalization is a larger amount of _____.
Q2) A(n) _____ exists when there are functional dependencies such that Y is functionally dependent on X, Z is functionally dependent on Y, and X is the primary key.
A) partial dependency
B) repeating group
C) atomic attribute
D) transitive dependency
Q3) In order to meet _____ requirements, you may have to denormalize some portions of a database design.
Q4) According to the data-modeling checklist, _____ should be nouns that are familiar to business, should be short and meaningful, and should document abbreviations, synonyms, and aliases for each entity.
Q5) Explain normalization and its different forms.
Q6) From a structural point of view, 3NF is better than _____.
A) 2NF
B) 3NF
C) 5NF
D) 6NF
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Chapter 7: Introduction to Structured Query Language Sql
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Q1) The SQL data manipulation command HAVING:
A) restricts the selection of rows based on a conditional expression.
B) restricts the selection of grouped rows based on a condition.
C) modifies an attribute's values in one or more table's rows.
D) groups the selected rows based on one or more attributes.
Q2) ANSI-standard SQL allows the use of special operators in conjunction with the WHERE clause.
A)True
B)False
Q3) _____ is a relational set operator.
A) EXCEPT
B) PLUS
C) ALL
D) EXISTS
Q4) The SQL command that allows a user to permanently save data changes is _____. A) INSERT
B) SELECT
C) COMMIT
D) UPDATE
Q5) The _____ specification is used to avoid having duplicated values in a column.
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Chapter 8: Advanced Sql
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Q1) _____ is the term used to describe an environment in which the SQL statement is not known in advance and is generated at run time.
Q2) MySQL allows multiple triggering conditions per trigger.
A)True
B)False
Q3) The DECLARE section in the trigger is used to declare any variables used inside the trigger code.
A)True
B)False
Q4) The _____ command is used to restore the database to its previous condition.
A) ROWCOUNT
B) BACKUP
C) COMMIT
D) ROLLBACK
Q5) If a user adds a new column to a table that already has rows, the existing rows will default to a value of _____ for the new column.
Q6) A view is a virtual table based on a SELECT query.
A)True
B)False
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Chapter 9: Database Design
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Q1) The _____ goal is to design an enterprise-wide database based on a specific data model but independent of physical-level details.
Q2) After testing is concluded, the final _____ is reviewed and printed and end users are trained.
Q3) The logical systems design is created during the _____ phase of the Systems Development Life Cycle (SDLC).
A) planning
B) analysis
C) implementation
D) maintenance
Q4) A system is always at some stage of SDLC because every request for structural changes requires retracing the steps of the Systems Development Life Cycle (SDLC).
A)True
B)False
Q5) The Systems Development Life Cycle (SDLC) is a sequential process rather than an iterative process.
A)True
B)False
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Chapter 10: Transaction Management and Concurrency Control
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Q1) Uniqueness ensures that no equal time stamp values can exist, and _____ ensures that time stamp values always increase.
Q2) A _____ lock allows concurrent transactions to access different rows of the same table.
A) database table
B) table-level
C) page-level
D) row-level
Q3) Time stamps must only have the single property of uniqueness.
A)True
B)False
Q4) A(n) _____ phase in a two phase lock is when a transaction releases all locks and cannot obtain a new lock.
A) growing
B) shrinking
C) locking
D) unlocking
Q5) The _____ occurs when two concurrent transactions, T1 and T2, are updating the same data element and one of the updates is lost.
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Chapter 11: Database Performance Tuning and Query
Optimization
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Q1) RAID systems use a single disk to create storage volumes.
A)True
B)False
Q2) Bitmap indexes tend to use less space than a _____ because they use bits instead of bytes to store their data.
A) hash index
B) sparse index
C) B-tree index
D) reverse index
Q3) The primary factor in determining the most efficient access plan is the I/O cost.
A)True
B)False
Q4) The data cache caches system catalog data and the contents of the indexes.
A)True
B)False
Q5) The B-tree index is used mainly in tables in which column values repeat a relatively small number of times.
A)True
B)False
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Chapter 12: Distributed Database Management Systems
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Q1) Data _____ describes the process of deciding where to locate data.
Q2) The _____ guarantees that if a portion of a transaction operation cannot be committed, all changes made at the other sites participating in the transaction will be undone to maintain a consistent database state.
A) DO-UNDO-REDO protocol
B) two-phase commit protocol (2PC)
C) coordinator protocol
D) write-ahead protocol
Q3) In theory, a(n) _____ can be an independent centralized database management system with proper interfaces to support remote access from other independent database management systems in the network.
A) transaction processor
B) application processor
C) transaction manager
D) data processor
Q4) After an update, the originating DP node sends the changes to the replica nodes to ensure that data is immediately updated, during _____replication.
Q5) The distributed database system must be _____ of the computer system hardware.
Q6) Explain the three types of operations defined by the DO-UNDO-REDO protocol.
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Chapter 13: Business Intelligence and Data Warehouses
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Q1) Periodicity, usually expressed as current year only, previous years, or all years, provides information about the time span of the data stored in a table.
A)True
B)False
Q2) _____ use web-based technologies to present key business performance indicators or information in a single integrated view, generally using graphics in a clear, concise, and easy to understand manner.
Q3) In business intelligence framework, data are captured from a production system and placed in _____ on a near real-time basis.
A) decision support system
B) portal
C) data warehouse
D) dashboard
Q4) Advanced OLAP feature become more useful when access to them is kept simple.
A)True
B)False
Q5) To deliver efficient decision support, OLAP tools must have advanced data _____ features.
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Chapter 14: Big Data and Nosql
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Q1) Data collected or aggregated around a central topic or entity is said to be ______ aware.
A) aggregate
B) transversally
C) feedback
D) visually
Q2) Mostorganizations that use Hadoop also use a set of other related products that interact and complement each other to produce an entire ______ of applications and tools.
Q3) In MongoDB, ______ method retrieves objects from a collection that match the restrictions provided.
A) count*
B) read*
C) review[]
D) find()
Q4) ______ is the Big Data 3 V that relates to the speed at which data is entering the system.
Q5) ______ isthe coexistence of a variety of data storage and data management technologies within an organization's infrastructure.
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Chapter 15: Database Connectivity and Web Technologies
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Q1) _____ is an application programming interface that allows a Java program to interact with a wide range of data sources (relational databases, tabular data sources, spreadsheets, and text files).
Q2) HTML is designed to facilitate the extraction and manipulation of data from structured documents over the Internet.
A)True
B)False
Q3) In the ADO.NET framework, the _____ object contains the actual SQL code or a stored procedure call to be run by the database.
A) Command
B) DataReader
C) DataAdapter
D) DataSet
Q4) A(n) _____ can use a shared connection to the database instead of creating a new one every time.
A) DLL
B) API
C) web browser
D) HTTP GET request
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Chapter 16: Database Administration and Security
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Q1) In the context of data quality management tools, _____ software is one that gathers statistics, analyzes existing data sources and metadata to determine patterns, and compares the patterns against standards that the organization has defined.
Q2) "All users must have passwords" is an example of a _____.
A) rule
B) policy
C) standard
D) procedure
Q3) The storage locations for multiple backups must include sites inside and outside the organization.
A)True
B)False
Q4) A(n) _____ is a logical storage area in Oracle.
A) audit log
B) datafile
C) schema
D) tablespace
Q5) Based on the type of decision-making support required, database users may be classified into: operational, tactical, or _____.
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