Big Data Management Test Bank
Course Introduction
Big Data Management explores the concepts, tools, and techniques involved in handling vast volumes of structured and unstructured data. The course covers data storage architectures, data integration, and advanced database management systems specifically designed for big data environments. Students learn about distributed systems, parallel processing frameworks like Hadoop and Spark, and NoSQL databases. Emphasis is placed on data quality, data governance, scalability, and real-time analytics. Through practical labs and projects, students gain hands-on experience in managing, processing, and analyzing big data to support informed decision-making in various organizational contexts.
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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76 Verified Questions
76 Flashcards
Source URL: https://quizplus.com/quiz/29009
Sample Questions
Q1) serve as the intermediary between the user and the database.
A) DBMSs
B) Metadata
C) End-user data
D) Programming languages
Answer: A
Q2) One disadvantage of a database system over previous data management approaches is increased costs.
A)True
B)False
Answer: True
Q3) is the result of processing raw data to reveal its meaning. Answer: Information
Q4) What are the advantages of having the DBMS between the end user's applications and the database?
Answer: Having a DBMS between the end user's applications and the database offers some important advantages. First, the DBMS enables the data in the database to be shared among multiple applications or users. Second, the DBMS integrates the many different users' views of the data into a single all- encompassing data repository.
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Chapter 2: Data Models
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75 Verified Questions
75 Flashcards
Source URL: https://quizplus.com/quiz/29016
Sample Questions
Q1) MySQL is an example of the .
A) hierarchical model
B) file system data model
C) relational data model
D) XML data model
Answer: C
Q2) The hierarchical data model was developed in the .
A) 1960s
B) 1970s
C) 1980s
D) 1990s
Answer: A
Q3) Which of the following types of HDFS nodes stores all the metadata about a file system?
A) Data node
B) Client node
C) Name node
D) Map node
Answer: C
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Page 4
Chapter 3: The Relational Database Model
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75 Verified Questions
75 Flashcards
Source URL: https://quizplus.com/quiz/29017
Sample Questions
Q1) The DIFFERENCE operator subtracts one table from the other.
A)True
B)False
Answer: True
Q2) is the real power behind the relational database, allowing the use of independent tables linked by common attributes.
Answer: JOIN
Q3) The proper use of keys is crucial to controlling data redundancy.
Answer: foreign
Q4) If one department chair-a professor-can chair only one department, and one department can have only one department chair. The entities PROFESSOR and DEPARTMENT exhibit a(n) relationship.
Answer: 1:1
Q5) The order of the rows and columns is important to the DBMS.
A)True
B)False
Answer: False
Q6) PRODUCT yields all possible pairs of rows from two tables, also known as the product.
Answer: Cartesian
Page 5
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Chapter 4: Entity Relationship Er Modeling
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75 Verified Questions
75 Flashcards
Source URL: https://quizplus.com/quiz/29018
Sample Questions
Q1) Participation is if one entity occurrence does not require a corresponding entity occurrence in a particular relationship.
Q2) A attribute can be further subdivided to yield additional attributes.
A) composite
B) simple
C) single-valued
D) multivalued
Q3) A(n) is the set of possible values for a given attribute.
A) domain
B) range
C) identifier
D) key
Q4) Identifying the attributes of entities helps in the better understanding of among entities.
Q5) When indicating cardinality, the first value represents the number of associated entities.
Q6) A relationship indicates the number of entities or participants associated with a relationship.
Q7) A(n) attribute need not be physically stored within the database.
Q8) A(n) relationship is also known as an identifying relationship.
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Chapter 5: Advanced Data Modeling
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85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/29019
Sample Questions
Q1) A primary key's main function is to uniquely identify a(n) within a table.
A) attribute
B) entity instance or row
C) entity subtype
D) natural key or identifier
Q2) 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
Q3) Within a specialization hierarchy, a supertype can exist only within the context of a subtype.
A)True
B)False
Q4) Specialization is the top-down process of identifying lower-level, more specific entity subtypes from a higher-level entity supertype.
A)True
B)False
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Chapter 6: Normalization of Database Tables
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110 Verified Questions
110 Flashcards
Source URL: https://quizplus.com/quiz/29020
Sample Questions
Q1) Of the following normal forms, is mostly of theoretical interest.
A) 1NF
B) 3NF
C) BCNF
D) DKNF
Q2) Normalization should be part of the design process.
A)True
B)False
Q3) Normalization is a process that is used for changing attributes to entities.
A)True
B)False
Q4) An ERD is created through an process.
Q5) What steps are involved in the conversion to third normal form?
Q6) A determinant is any attribute whose value determines other values within a column.
A)True
B)False
Q7) Normalization works through a series of stages called normal forms.
A)True
B)False
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Chapter 7: Introduction to Structured Query Language Sql
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111 Verified Questions
111 Flashcards
Source URL: https://quizplus.com/quiz/29021
Sample Questions
Q1) A database language enables the user to create database and table structures to perform basic data management chores.
A)True
B)False
Q2) Which of the following queries will use the given columns and column aliases from the PRODUCT table to determine the total value of inventory held on hand?
A) SELECT P_DESCRIPT, P_QOH, P_PRICE, P_QOH/P_PRICE FROM PRODUCT;
B) SELECT P_DESCRIPT, P_QOH, P_PRICE, P_QOH=P_PRICE FROM PRODUCT;
C) SELECT P_DESCRIPT, P_QOH, P_PRICE, P_QOH*P_PRICE FROM PRODUCT;
D) SELECT P_DESCRIPT, P_QOH, P_PRICE, P_QOH-P_PRICE FROM PRODUCT;
Q3) U.S. state abbreviations are always two characters, so (2) is a logical choice for the data type representing a state column.
Q4) The condition is generally composed of an equality comparison between the foreign key and the primary key of related tables.
Q5) In SQL, all expressions evaluate to True or false.
Q6) What are the wildcard characters that are used with the LIKE command? Provide one or more examples of each.
Q7) words are words used by SQL to perform specific functions.
Page 9
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Chapter 8: Advanced Sql
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109 Verified Questions
109 Flashcards
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Sample Questions
Q1) functions extract a value of a given data type and convert it to the equivalent value in another data type.
Q2) The statement combines rows from two queries and excludes duplicates.
A) UNION
B) UNION ALL
C) INTERSECT
D) MINUS
Q3) Explain the different basic types of join operations. What are they and how do they work?
Q4) A row-level trigger is assumed if we omit the FOR EACH ROW keywords and a statement-level trigger required the use of the FOR EACH ROW keyword.
A)True
B)False
Q5) Variables can be declared inside a stored procedure.
A)True
B)False
Q6) When using a subquery, the output of a(n) query is used as the input for the outer query.
Q7) The syntax of the DECODE function starts with .
Page 10
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Chapter 9: Database Design
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103 Verified Questions
103 Flashcards
Source URL: https://quizplus.com/quiz/29023
Sample Questions
Q1) The feasibility study during the planning phase of the Systems Development Life Cycle (SDLC) must address the:
A) requirements of the current system's end users.
B) problems and constraints related to the company situation.
C) questions about modification and replacement of existing system.
D) technical aspects of hardware and software requirements.
Q2) The first step in is to discover the data element characteristics.
Q3) Systems analysis establishes the need for an information system and its extent.
A)True
B)False
Q4) The implementation and loading phase of the Database Life Cycle (DBLC) involves . A) defining objectives
B) introducing changes
C) testing the database
D) installing the DBMS
Q5) List and briefly describe the three types of system maintenance activities.
Q6) After testing is concluded, the final is reviewed and printed and end users are trained.
Q7) What are the factors affecting the purchasing decision for DBMS software?
Page 11
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Chapter 10: Transaction Management and Concurrency Control
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85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/29010
Sample Questions
Q1) occurs when a transaction accesses data before and after one or more other transactions finish working with such data.
A) Inconsistent retrievals
B) The phenomena of uncommitted data
C) Lost update problems
D) Dirty read problems
Q2) A(n) condition occurs when two or more transactions wait for each other to unlock data.
A) deadlock
B) exclusive lock
C) binary lock
D) two-phase lock
Q3) A(n) lock has only two stages (0 and 1).
A) shared
B) exclusive
C) binary
D) two-phase
Q4) The rule states that only one transaction at a time can own an exclusive lock on the same object.
Page 12
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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85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/29011
Sample Questions
Q1) The table space is the most frequently accessed table space and should be stored in its own volume.
Q2) To work with data, the DBMS must retrieve the data from permanent storage and place it in RAM.
A)True
B)False
Q3) A data file can contain rows from a single table alone.
A)True
B)False
Q4) refers to the number of different values a column could possibly have.
A) Database statistics
B) Data sparsity
C) A bitmap index
D) Clustering
Q5) Indexes are very useful in small tables or tables with low sparsity.
A)True
B)False
Q6) Good database performance is easy to evaluate.
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) A transaction processor (TP) is the software component residing on each computer that stores and retrieves data located at the site.
A)True
B)False
Q2) Rapid ad hoc data became unnecessary in the quick-response decision-making environment.
A)True B)False
Q3) One of the advantages of a distributed database management system (DDBMS) is operating cost.
Q4) One of the advantages of a distributed database management system (DDBMS) is that the data is located near the site with the least demand.
A)True B)False
Q5) management ensures that data move from one consistent state to another.
Q6) The fragment condition indicates that no row has a duplicate, regardless of the fragment in which it is located.
Q7) Describe performance transparency and heterogeneity transparency.
Page 15
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Chapter 13: Business Intelligence and Data Warehouses
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75 Verified Questions
75 Flashcards
Source URL: https://quizplus.com/quiz/29013
Sample Questions
Q1) Operational data are commonly stored in many tables, and the stored data represent information about a given only.
A) transaction
B) database
C) table
D) concept
Q2) Relational data warehouses use multidimensional data schema support to handle multidimensional data.
A)True
B)False
Q3) _____ online analytical processing provides OLAP functionality by using relational databases and familiar relational query tools to store and analyze multidimensional data.
Q4) A schema is a type of star schema in which dimension tables can have their own dimension tables.
A) snowflake
B) starflake
C) dimension
D) matrix
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Chapter 14: Database Connectivity and Web Technologies
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85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/29014
Sample Questions
Q1) A web server is a middleware application that expands the functionality of web servers by linking them to a wide range of services.
Q2) Which of the following is True of a web application server?
A) It is Microsoft's implementation of a superset of the SQL Access Group CLI standard for database access.
B) It is automatically invoked by the browser when needed.
C) It runs on the client machine, freeing server resources.
D) It provides security and authentication of users through user IDs and passwords.
Q3) is a higher-level, object-oriented application interface used to access remote database servers.
A) UDA
B) ODBC
C) DAO
D) RDO
Q4) A document type definition (DTD) can be referenced by many Extensible Markup Language (XML) documents of the same type.
A)True
B)False
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Chapter 15: Database Administration and Security
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86 Verified Questions
86 Flashcards
Source URL: https://quizplus.com/quiz/29015
Sample Questions
Q1) An enterprise database can be defined as the company's data representation that provides support for all present and expected future operations.
A)True
B)False
Q2) allows for the translation of the company's strategic goals into the data and applications that will help the company achieve those goals.
A) Access Management
B) Business Intelligence
C) Information engineering (IE)
D) MOLAP
Q3) When performing user access management, a DBA assigns passwords to each user at both the operating system and DBMS levels.
A)True
B)False
Q4) The storage locations for multiple backups must include sites inside and outside the organization.
A)True
B)False
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