Database Programming
Pre-Test Questions
Course Introduction
Database Programming is a course designed to introduce students to the concepts and practices involved in building, managing, and interacting with databases using modern programming languages. The course covers fundamental topics such as database design, data modeling, and normalization, as well as hands-on experience with Structured Query Language (SQL) for creating, querying, and modifying database structures. Students will also explore the integration of databases into applications through the use of programming languages like Python, Java, or PHP, emphasizing techniques for connecting to databases, executing transactions, and handling data securely and efficiently. By the end of the course, students will have the skills to design robust databases and develop applications that effectively utilize database technologies in real-world scenarios.
Recommended Textbook
Database Systems Design Implementation and Management 13th Edition by Carlos Coronel
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Chapter 1: Database Systems
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Sample Questions
Q1) The only way to access the data in a database is through the DBMS.
A)True
B)False
Answer: True
Q2) Data processing can be as simple as organizing data to reveal patterns.
A)True
B)False
Answer: True
Q3) _____ data exist in a format that does not lend itself to processing that yields information.
A) Structured
B) Semistructured
C) Unstructured
D) Historical
Answer: C
Q4) Web and mobile technologies that enable "anywhere, anytime, always on" human interactions are forms of _____.
Answer: social media
Q5) Raw data must be properly _____ for storage, processing and presentation.
Answer: formatted
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Chapter 2: Data Models
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Sample Questions
Q1) What components should an implementation-ready data model contain?
Answer: An implementation-ready data model should contain at least the following components:
A description of the data structure that will store the end-user data. A set of enforceable rules to guarantee the integrity of the data.
A data manipulation methodology to support the real-world data transformations.
Q2) M:N relationships are not appropriate in a relational model.
A)True
B)False
Answer: True
Q3) In the _____ model, each parent can have many children, but each child has only one parent.
A) hierarchical
B) network
C) relational
D) entity relationship
Answer: A
Q4) From a database point of view, the collection of data becomes meaningful only when it reflects properly defined _____.
Answer: business rules
Page 4
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Chapter 3: The Relational Database Model
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Sample Questions
Q1) _____ logic, used extensively in mathematics, provides a framework in which an assertion (statement of fact) can be verified as either true or false.
A) Predicate
B) Database
C) Relational
D) Index
Answer: A
Q2) The DIVIDE operation uses one single-column table (e.g., column "a") as the divisor and one two-column table (e.g., columns "a" and "b") as the dividend.
A)True
B)False
Answer: True
Q3) A(n) ______ provides a detailed description of all tables found within the user/designer-created database.
Answer: data dictionary
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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Sample Questions
Q1) A derived attribute is indicated in the Chen notation by a _____ that connects the attribute and an entity.
A) single line
B) dashed line
C) double dashed line
D) double line
Q2) What is a weak relationship? Provide an example.
Q3) The entity relationship model uses the associative entity to represent a(n) _____ relationship between two or more entities.
A) M:N
B) 1:M
C) N:1
D) M:1
Q4) Identifying the attributes of entities helps in the better understanding of _____ among entities.
Q5) A composite identifier is a primary key composed of more than one attribute.
A)True
B)False
Q6) A person's Social Security number would be an example of a(n) _____ attribute.
Page 6
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Chapter 5: Advanced Data Modeling
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Sample Questions
Q1) A weak entity in a strong identifying relationship with a parent entity is normally used to represent a(n) _____ that is represented in the data model as two separate entities.
Q2) From a data modeling point of view, _____ data refer to data whose values change over time and for which one must keep a history of the data changes.
Q3) A(n) _____ is the attribute in the supertype entity that determines to which entity subtype each supertype occurrence is related.
A) subtype discriminator
B) inheritance discriminator
C) specialization hierarchy
D) entity supertype
Q4) _____ completeness means that every supertype occurrence must be a member of at least one subtype.
Q5) While using a surrogate key, one must ensure that the candidate key of the entity in question performs properly through the use of the "_____" and "not null" constraints.
Q6) 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) 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
Q2) An attribute that is part of a key is known as a(n) _____ attribute.
A) important
B) nonprime
C) prime
D) entity
Q3) Explain normalization and its different forms.
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) All relational tables satisfy the _____ requirements.
Q6) _____ is a process to help reduce the likelihood of data anomalies.
Page 8
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Chapter 7: Introduction to Structured Query Language Sql
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Sample Questions
Q1) The ANSI SQL standards are also accepted by the ISO.
A)True
B)False
Q2) What are the wildcard characters that are used with the LIKE command? Provide one or more examples of each.
Q3) You cannot insert a row containing a null attribute value using SQL.
A)True
B)False
Q4) The _____ command defines a default value for a column when no value is given.
A) CHECK
B) UNIQUE
C) NOT NULL
D) DEFAULT
Q5) Describe the important features and applications of SQL functions.
Q6) The syntax of theEXCEPT statement in Oracle is _____.
Q7) An alias is especially useful when a table must be joined to itself in a(n) _____ query.
Q8) DATE() and SYSDATE are special functions that return today's date in MS Access and _____, respectively.
Q9) In the SQL environment, the word _____ covers both questions and actions. Page 9
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Page 10
Chapter 8: Advanced Sql
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Q1) In Oracle, _____ make(s) it possible to merge SQL and traditional programming constructs, such as variables, conditional processing (IF-THEN-ELSE), basic loops (FOR and WHILE loops,) and error trapping.
A) dynamic SQL
B) stored procedures
C) embedded SQL
D) Procedural Language SQL
Q2) A view is a virtual table based on a SELECT query.
A)True
B)False
Q3) Just like database triggers, stored procedures are stored in the database.
A)True
B)False
Q4) The _____ command permanently saves all changes-such as rows added, attributes modified, and rows deleted-made to any table in the database.
A) COMMIT
B) SELECT
C) ROLLBACK
D) UPDATE
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Chapter 9: Database Design
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Sample Questions
Q1) What are the factors affecting the purchasing decision for DBMS software?
Q2) In the Systems Development Life Cycle (SDLC), problems defined during the planning phase are examined in greater detail during the analysis phase.
A)True
B)False
Q3) Once the data has been loaded into the database, the _____ tests and fine-tunes the database for performance, integrity, concurrent access, and security constraints.
A) programmer
B) manager
C) database administrator
D) systems administrator
Q4) The traditional Systems Development Life Cycle (SDLC) is divided into _____ phases.
A) two
B) three
C) four
D) five
Q5) Explain the concept of logical design and list the steps involved.
Q6) The first step in _____ is to discover the data element characteristics.
Page 12
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Chapter 10: Transaction Management and Concurrency Control
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Questions
Q1) _____ are required to prevent another transaction form reading inconsistent data.
A) Locks
B) Schedules
C) Stamps
D) Logs
Q2) A _____ lock will lock the entire table, preventing access to any row by a transaction while another transaction is using the table.
A) database-level
B) table-level
C) page-level
D) row-level
Q3) The _____ protocol ensures that transaction logs are always written before any database data is actually updated.
Q4) The scheduler establishes the order in which the operations within concurrent transactions are executed.
A)True
B)False
Q5) What is transaction isolation and why it is important?
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Chapter 11: Database Performance Tuning and Query
Optimization
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Sample Questions
Q1) The purpose of an I/O operation is to move data to and from different computer components or devices.
A)True
B)False
Q2) List and describe some typical DBMS processes.
Q3) _____ are ordered sets of values that are crucial in speeding up data access.
Q4) A(n) _____ request is a low-level read or write data access operation to or from computer devices.
Q5) A DBA determines the initial size of the data files that make up the database; however, as required, the data files can automatically expand in predefined increments known as _____.
A) procedure cache
B) buffer cache
C) supplements
D) extents
Q6) A(n)_____ is an index based on a specific SQL function or expression.
Q7) To work with data, the DBMS must retrieve the data from permanent storage and place it in RAM.
A)True
B)False Page 14
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Page 15
Chapter 12: Distributed Database Management Systems
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Q1) A user-friendly _____ is one advantage of a distributed database management system (DDBMS) .
Q2) A fully distributed database management system (DBMS) must perform all the functions of a centralized DBMS, and it must handle all necessary functions imposed by the distribution of data and processing.
A)True
B)False
Q3) _____ transparency allows the system to operate as if it were a centralized database management system.
A) Heterogeneity
B) Distribution
C) Performance
D) Failure
Q4) A distributed _____ contains the description of the entire database as seen by the database administrator.
A) global index
B) data dictionary
C) global catalog
D) data thesaurus
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Chapter 13: Business Intelligence and Data Warehouses
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Q1) _____ 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.
Q2) Multidimensional data analysis techniques include advanced computational functions.
A)True
B)False
Q3) What is the difference between decision support data and operational data from the point of view of data analyst?
Q4) In a typical star schema, each dimension record is related to thousands of _____ records.
A) attribute
B) fact
C) key
D) primary
Q5) _____ is a term used to describe a comprehensive, cohesive, and integrated set of tools and processes used to capture, collect, integrate, store, and analyze data with the purpose of generating and presenting information used to support business decision making.
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Chapter 14: Big Data and Nosql
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Q1) A query in a graph database is called a ______.
A) schema
B) hierarchy
C) traversal
D) script
Q2) ______ focuses on filtering data as it enters the system to determine which data to keep and which to discard.
A) Scaling up
B) Feedback loop processing
C) Stream processing
D) Scaling out
Q3) Characteristics that are important in working with data in the relational database model also apply to Big Data.
A)True
B)False
Q4) ______minimizes the number of disk reads necessary to retrieve a row of data.
A) Column-oriented database
B) Row-centric storage
C) Column-family database
D) Column-centric storage
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Chapter 15: Database Connectivity and Web Technologies
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Sample Questions
Q1) Among client-side extensions, _____ is a Microsoft specification for writing programs that run inside the Internet Explorer browser.
A) COBOL
B) ActiveX
C) JavaScript
D) Visor.Net
Q2) In the ADO.NET framework, the _____ is a disconnected, memory-resident representation of the database.
A) Command
B) DataReader
C) DataAdapter
D) DataSet
Q3) Open Database Connectivity (ODBC), a superset of the SQL Access Group Call Level Interface (CLI), is implemented by _____.
Q4) XML is used to create _____, or vocabularies for entire industries.
Q5) What are the main types of objects in the OLE-DB model? Explain.
Q6) A web _____ server is a middleware application that expands the functionality of web servers by linking them to a wide range of services.
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Chapter 16: Database Administration and Security
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Sample Questions
Q1) The DSO's activities are often classified as _____ management, which includes all DBA activities designed to ensure data availability following a physical calamity or a database integrity failure.
Q2) The DBA must review the database application design to ensure that transactions are _____, meaning that they mirror real-world events.
Q3) Describe the DBA's managerial role.
Q4) _____ CASE tools provide support for the coding and implementation phases.
A) Front-end
B) Back-end
C) Vertical
D) Horizontal
Q5) The _____ component of a CASE tool produces the information system's input/output formats.
A) analysis
B) graphics
C) program document generator
D) screen painter and report generator
Q6) The _____ aspect of introducing a DBMS in an organization deals with hardware and software changes in the organization.
Page 20
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