Enterprise Data Management Exam Review
Course Introduction
Enterprise Data Management explores the principles, strategies, and technologies involved in managing data as a critical organizational asset. This course covers topics such as data governance, data quality, metadata management, master data management, and data integration, emphasizing their roles in supporting business objectives and decision-making processes. Students will gain practical insights into designing data management frameworks, implementing policies for data lifecycle, ensuring data security and compliance, and leveraging data analytics for competitive advantage within enterprises.
Recommended Textbook
Database Systems Introduction to Databases and Data Warehouses 1st Edition by Nenad Jukic
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10 Chapters
752 Verified Questions
752 Flashcards
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Page 2
Chapter 1: Introduction
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57 Verified Questions
57 Flashcards
Source URL: https://quizplus.com/quiz/61941
Sample Questions
Q1) Information that is collected in database systems can be used,in general,for two purposes: an operational purpose and a transactional purpose.
A)True
B)False
Answer: False
Q2) Explain the relationship between the terms data and information.
Answer: The term data refers to facts that are recorded and can be accessed.The data is recorded and kept because it is considered to be of use to an intended user.The term information refers to the data that is accessed by a user for some particular purpose.Typically,getting the needed information from a collection of data requires performing an activity,such as searching through,processing,or manipulating the data in some form or fashion.The terms data and information are often interchanged and used as synonyms for each other.Such practice is very common and is not necessarily wrong,since information is simply the data that we need.If the data that an organization gathers and stores has a purpose and satisfies a user's need,then such data is also information.
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3
Chapter 2: Database Requirements and ER Modeling
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) How many entities are involved in a binary relationship?
A)1
B)2
C)More than 2
D)Between 1 and 2 Answer: B
Q2) Within one entity,each attribute name must be different.
A)True
B)False
Answer: True
Q3) Entity instances are depicted in ER diagrams.
A)True
B)False Answer: False
Q4) A relationship attribute of a M:N relationship cannot be assigned to either of the entities involved in that relationship.
A)True
B)False Answer: True
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Chapter 3: Relational Database Modeling
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) How many tables will the relational schema mapped from the Eaglerun Trucking Dispatcher ER diagram have?
A)2
B)3
C)4
D)5
Answer: C
Q2) Each weak entity has one owner entity.
A)True
B)False
Answer: False
Q3) What is the minimal number of records that can be entered in the database whose relational schema is mapped from the Central School Library ER diagram?
A)1
B)4
C)5
D)12
Answer: C
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Page 5
Chapter 4: Update Operations, update Anomalies, and Normalization
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100 Flashcards
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Sample Questions
Q1) Give a definition of 3NF.
Q2) Deleting the following record in the table VEHICLE: 111,Car,Ford,O1,Pam while leaving the remaining three records in the table,will cause an occurrence of a deletion anomaly.
A)True
B)False
Q3) Briefly describe the process of normalization.In your description,list the three most fundamental normal forms,but do not go into detail about any particular normal form.
Q4) Functional dependency OwnerID --> OwnerName exists in the table VEHICLE.
A)True
B)False
Q5) Changing the name of owner O1,Pam to Pamela in the table VEHICLE will cause an occurrence of a modification anomaly.
A)True
B)False
Q6) Every relation without partial functional dependencies is in 2NF.
A)True
B)False
Q7) What is denormalization?
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Chapter 5: SQL
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100 Flashcards
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Sample Questions
Q1) Write an SQL query for the HAPPY INSURANCE database that will,for each area where the highest rated agent has a rating higher than 100,display the area ID,area name,and average rating for all agents in the area.
Q2) What is the result of the following SQL query? SELECT ename FROM employee
WHERE esalary = (SELECT MAX(salary)FROM employee);
A)The query displays the number that represents how many employees share the highest salary
B)The query displays the salary of the employee (or employees)with the highest salary
C)The query displays the name and the salary of the employee (or employees)with the highest salary
D)The query displays the name of the employee (or employees)with the highest salary
Q3) The following query on table VEHICLE will return 4 values: SELECT DISTINCT type FROM vehicle;
A)True B)False
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Chapter 6: Database Implementation and Use
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Sample Questions
Q1) Most RDBMS packages implement assertions using the CREATE ASSERTION statement.
A)True
B)False
Q2) Describe the delete set-to-default option (for implementing a referential integrity constraint).
Q3) If a DBMS enforces an UPDATE CASCADE option on the referential integrity constraint between
CLIENT and AGENT in the HAPPY INSURANCE database,what will be the outcome after a User tries to change the AgentID value in the last record to A5?
A)Value A4 appears once in column AgentID in AGENT,and value A4 appears once in column ClientAgent in table CLIENT
B)Value A5 appears once in column AgentID in AGENT,and value A5 appears once in column ClientAgent in table CLIENT
C)Value A5 appears once in column AgentID in AGENT,and value A5 does not appear in column ClientAgent in table CLIENT
D)Value A5 does not appear in column AgentID in AGENT,and value A5 appears once in column ClientAgent in table CLIENT
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Chapter 7: Data Warehousing Concepts
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48 Verified Questions
48 Flashcards
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Sample Questions
Q1) Operational queries typically process:
A)Larger amounts of data than analytical queries
B)Smaller amounts of data than analytical queries
C)Equal amounts of data as analytical queries
D)Infinite amounts of data,incomparable to analytical queries
Q2) ETL infrastructure has to account for and reconcile all of the differences in the metadata and the data between the operational sources and the target data warehouses.
A)True
B)False
Q3) List the three major components of every data warehousing system.
Q4) Explain the term subject-oriented in the following data warehouse definition: The data warehouse is a structured repository of integrated,subject-oriented,enterprise-wide,historical,and time-variant data.The purpose of the data warehouse is the retrieval of analytical information.A data warehouse can store detailed and/or summarized data.
Q5) Analytical databases are referred to as application-oriented.
A)True
B)False
Q6) What is an independent data mart?
Page 9
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Chapter 8: Data Warehouse and Data Mart Modeling
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Sample Questions
Q1) Dimensionally modeled data warehouse approach results in multiple unrelated ETL infrastructures.
A)True
B)False
Q2) Dimensional modeling can be employed as a relational data modeling technique.
A)True
B)False
Q3) Transaction time is typically included as a column in the fact table.
A)True
B)False
Q4) Which of the following allows reusing (instead of duplication)of dimensions?
A)Time column
B)Snowflaking
C)Galaxy of stars
D)Degenerate dimension
Q5) Show how the Type 2 approach would implement the following change: the size of property whose ID is 111 is increased to 7000 sq ft on 1/1/2013.Assume that the dimension was originally created and populated with all brand-new properties on 1/1/2000,and add appropriate timestamps and a row indicator.
Q6) What is a slowly changing dimension?
Page 10
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Chapter 9: Data Warehouse Implementation and Use
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Sample Questions
Q1) What is an executive dashboard?
Q2) The result table below is the result of a ________ action on the GENERICOLAPRESULT1 result table.
\[\begin{array} { r r r r r r }
&& { C C 1 } && { C C 2 } \\
& D D 1 & D D 2 & D D 3 & D D 4 & D D 5 \\
E E 1 & 200 & 0 & 600 & 0 & 0 \\
E E 2 & 0 & 400 & 0 & 800 & 0 \\
E E 3 & 0 & 0 & 0 & 0 & 100
\end{array}\]
A)Slice and dice
B)Pivot
C)Drill-up
D)Drill-down
Q3) What takes place during the extraction part of ETL?
Q4) Creating a data warehouse involves using the functionalities of database management software to implement the data warehouse model as a collection of physically created and mutually connected database tables.
A)True
B)False
Page 11
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Chapter 10: Overview of Dbms Functionalities and Database
Administration
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42 Verified Questions
42 Flashcards
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Sample Questions
Q1) The data definition DBMS component uses the SQL commands from the DDL category.
A)True
B)False
Q2) The data manipulation DBMS component is used:
A)By end users,directly only
B)By end users,via front-end applications only
C)By end users,either directly or via front-end applications
D)By no end users
Q3) The DCL commands are used by the business end users of a database system.
A)True
B)False
Q4) What is a recovery log?
Q5) The application development component provides functionalities to the developers of:
A)Database models
B)Security and backup procedures
C)Data dictionaries
D)Front-end applications
Q6) What is a single-user DBMS? Page 12
Q7) What is the purpose of the COMMIT command?
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Page 13