Database Applications Development Solved Exam Questions - 1978 Verified Questions

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Database Applications Development

Solved Exam Questions

Course Introduction

This course explores the design, implementation, and deployment of database-driven applications. Students will learn core concepts of relational databases, SQL programming, database connectivity, and data modeling. The course covers the integration of databases with various application development environments, focusing on both server-side and client-side technologies. Topics include schema design, transaction management, data validation, security considerations, and optimization for performance. Through practical projects and assignments, students gain hands-on experience in developing scalable, robust database applications tailored to real-world scenarios. Recommended Textbook

Database Processing Fundamentals Design and Implementation 14th Edition by

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Chapter 1: Introduction

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Sample Questions

Q1) The NoSQL movement should really be called a NoRelational movement.

A)True

B)False

Answer: True

Q2) What components are included in a database?

Answer: The database contains user data,metadata,indexes and other overhead data,and application metadata.User data is the data from the user's environment that they want to track.Metadata is data about the structure of the database.Indexes and other overhead data are structures that the database uses to improve performance.Finally,the application metadata is data about forms,reports,and other application components that some databases,particularly those created with desktop DBMS products,store with the database.

Q3) Database design is important,and fortunately it is simple to do.

A)True

B)False

Answer: False

Q4) A database management system (DBMS)creates,processes and administers databases.

A)True

B)False

Answer: True

3

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Chapter 2: Introduction to Structured Query Language

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Sample Questions

Q1) In an SQL query,which SQL keyword actually begins the query?

A)EXISTS

B)FROM

C)SELECT

D)WHERE Answer: C

Q2) SQL can only query a single table.

A)True

B)False Answer: False

Q3) SQL statements end with a colon.

A)True

B)False Answer: False

Q4) When two conditions must both be true for the rows to be selected,the conditions are separated by the SQL AND keyword.

A)True

B)False Answer: True

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Chapter 3: The Relational Model and Normalization

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Sample Questions

Q1) A combination of two or more columns used to identify particular rows in a relation is a ________.

A)record

B)composite key

C)foreign key

D)surrogate key

Answer: B

Q2) A determinant of a functional dependency may or may not be unique in a relation.

A)True

B)False Answer: True

Q3) A key can be composed of a group of attributes taken together.

A)True

B)False

Answer: True

Q4) In relational terms as defined by E.F.Codd,a row is called a tuple.

A)True

B)False Answer: True

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Chapter 4: Database Design Using Normalization

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Sample Questions

Q1) When a table is created using existing data from multiple sources,you are likely to find that some data values have never been provided because the values are not known.This is an example of ________.

A)the multivalued,multicolumn problem

B)the inconsistent values problem

C)the missing values problem

D)the general-purpose remarks column problem

Q2) When examining data values as a part of assessing table structure,you should try to determine two types of dependencies: functional dependencies and multivalued dependencies.

A)True

B)False

Q3) Normalization is an advantage for a read-only database.

A)True

B)False

Q4) Multivalued dependencies show up under a different name as the multivalued,multicolumn problem.

A)True

B)False

Q5) What are null values,and why are they a problem?

Page 6

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Chapter 5: Data Modeling With the Entity-Relationship

Model

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Sample Questions

Q1) Subtypes can be exclusive or inclusive.

A)True

B)False

Q2) Relationships between supertypes and subtypes are called IS-A relationships.

A)True

B)False

Q3) You are given an E-R diagram with two entities,ORDER and CUSTOMER,as shown above.What does the symbol next to the CUSTOMER entity indicate?

A)A maximum cardinality of "zero"

B)A maximum cardinality of "one"

C)A minimum cardinality of "optional"

D)A minimum cardinality of "required"

Q4) One example of a database design using an ID-dependent relationship is the archetype/instance pattern.

A)True

B)False

Q5) A binary relationship is a relationship between two or more entities.

A)True

B)False

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Chapter 6: Transforming Data Models Into Database Designs

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Sample Questions

Q1) An ID-dependent table can be used to represent multivalued attributes.

A)True

B)False

Q2) Each attribute of an entity becomes a(n)________ of a table.

A)column

B)primary key

C)foreign key

D)alternate key

Q3) In a 1:1 relationship,the foreign key is defined as an alternate key to make the DBMS enforce uniqueness.

A)True

B)False

Q4) To represent an N:M relationship in a relational database design,an intersection table is created.

A)True

B)False

Q5) Whether or not an attribute is required is determined during the database modeling phase.

A)True

B)False

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Chapter 7: SQL for Database Construction and Application Processing

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Sample Questions

Q1) If the table PRODUCT has a column PRICE,and PRICE has the data type Numeric (8,2),the value 98765 stored in that field will be displayed by the DBMS as 98765.00.

A)True

B)False

Q2) SQL triggers can be used when the DBMS receives an INSERT request.

A)True

B)False

Q3) Which SQL keyword is used to impose restrictions on a table,data or relationship?

A)SET

B)CREATE

C)SELECT

D)CONSTRAINT

Q4) The SQL keyword used to limit column values to specific values is ________.

A)CONSTRAINT

B)CHECK

C)NOT NULL

D)UNIQUE

Q5) Explain the essential format of the CREATE TABLE statement. Include an example.

Page 9

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Chapter 8: Database Redesign

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Sample Questions

Q1) Which of the following different copies of the database schema is typically not used in the database redesign process?

A)Small test database

B)Data warehouse database

C)Operational database

D)Large test database

Q2) When dropping a nonkey column from a table,which of the following steps is (are)included in the process? (The order of the steps listed below is not relevant,only the steps themselves. )

A)Drop any column constraints from the table

B)Drop the column from the table

C)Drop any foreign keys constraints based on the column

D)Both A and B are correct

Q3) When running an SQL query that uses NOT EXISTS,the NOT EXISTS keyword will be true if ________.

A)any row in the subquery meets the condition

B)all rows in the subquery meet the condition

C)no row in the subquery meets the condition

D)any row in the subquery fails to meet the condition

Q4) What is the process for adding a NOT NULL column to a table?

Page 10

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Chapter 9: Managing Multiuser Databases

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Sample Questions

Q1) Locks that are placed assuming that a conflict will occur are called ________.

A)explicit locks

B)implicit locks

C)optimistic locks

D)pessimistic locks

Q2) One remedy for the inconsistencies caused by concurrent processing is ________.

A)concurrency

B)checkpointing

C)rollback

D)resource locking

Q3) In two-phase locking,all locks are obtained during the growing phase.

A)True

B)False

Q4) A checkpoint is a point of synchronization between the database and the transaction log.

A)True

B)False

Q5) Briefly explain the strategy of two-phased locking.

Q6) Distinguish between the four cursor types.

Q7) Explain the concept of an atomic transaction.

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Chapter 10: Managing Databases With SQL Server 2014

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Sample Questions

Q1) Which of the following is a type of cursor concurrency that causes SQL Server to place an update lock on a row when the row is read?

A)SCROLL_LOCK

B)Optimistic

C)Serializable

D)Read only

Q2) When using SQL Server,developers place explicit locks.

A)True

B)False

Q3) Locking hints included in an SQL statement will override locking behavior based on explicit transaction isolation level statements.

A)True

B)False

Q4) Briefly explain the different SQL Server backup types.

Q5) Which type of backup in SQL Server will create a backup of the entire database?

A)Full backup

B)Transaction backup

C)Database backup

D)Complete backup

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Chapter 11: Managing Databases With Oracle Database

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Sample Questions

Q1) Which of the following commands does Oracle Database not support?

A)CREATE TABLE

B)CREATE CONSTRAINT

C)ON DELETE CASCADE

D)ON UPDATE CASCADE

Q2) Explain sequences and their relationship to surrogate keys.Include an example.

Q3) One limitation of the Oracle Data Import Wizard is that it ________.

A)does not allow addition of a new primary key column

B)does not allow data to be imported into an existing table

C)does not allow import of "date" type data

D)only allows import of data from Microsoft Excel,no other formats

Q4) The PL/SQL keyword ISTHERE is used to test for the existence of a condition.

A)True

B)False

Q5) SOONER and LATER triggers are placed on tables.

A)True

B)False

Q6) What is SQL Developer?

Q7) What is the Oracle Enterprise Manager Database Express?

Q8) Explain the Oracle Database PL/SQL cursor statements.

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Chapter 12: Managing Databases With Mysql 56

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Sample Questions

Q1) A new MySQL database is created using ________.

A)the New Database dialog tab

B)the Create Database command

C)the new_schema dialog tab

D)the Create Schema command

Q2) To run a single SQL command in MySQL Community Edition ________.

A)click the "Execute" button in the MySQL Workbench

B)click the "Execute SQL in Connected Server" button in the MySQL Workbench

C)click the "Execute SQL Script in Connected Server" button in the MySQL Workbench

D)click the "Execute SQL Statement under the keyboard cursor" button in the MySQL Workbench

Q3) SQL statements can be run individually or as part of a related group of SQL statements known as a script.

A)True

B)False

Q4) What is the MySQL Command-Line Client?

Q5) Describe how to create and run an SQL query in MySQL Server Community Edition.

Q6) What is the MySQL Table Editor?

Q7) What is the MySQL Workbench?

Page 14

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Chapter 13: The Web Server Environment

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Sample Questions

Q1) PDO stands for ________.

A)PHP Data Objects

B)PHP Design Objects

C)Personal Data Objects

D)Personal Design Objects

Q2) JSP pages ________.

A)are automatically compiled by the servlet processor as needed

B)are required to be compiled by the developer before being made public

C)are automatically checked for syntax errors by the servlet as they are written

D)uses more memory than CGI files

Q3) JSP pages are automatically re-compiled if the uncompiled JSP page is newer than the compiled version of the page.

A)True

B)False

Q4) The SQL Server statement SELECT ...FOR XML RAW tells SQL Server to place the data values from the columns in the table into XML elements.

A)True

B)False

Q5) Explain the process by which JSP pages are compiled.

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Chapter 14: Big Data, Data-Warehouses, and Business Intelligence Systems

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Sample Questions

Q1) Hadoop is a(n)________.

A)RDMBS

B)OODBMS

C)distributed file system (DFS)

D)Web server

Q2) Big Data is the name given to the enormous datasets generated by Web 2.0 applications.

A)True

B)False

Q3) A data mart differs from a data warehouse in that ________.

A)it has a larger database

B)it deals with a particular component or functional area of the business

C)data mart users must have more data management expertise than data warehouse employees

D)it is updated more frequently by the data mart users

Q4) ________ is a DBMS that provides a full set of object-relational features.

A)Oracle Database

B)Microsoft Access

C)Microsoft SQL Server 2014

D)MySQL

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Chapter 15: Getting Started With Microsoft Access 2013

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Sample Questions

Q1) Each of the following is a way of inserting data into a Microsoft Access table except

A)Datasheet view

B)a data entry form

C)QBE

D)SQL

Q2) The Microsoft Access 2013 tabbed Ribbon contains a set of control tabs.

A)True

B)False

Q3) Microsoft Access is a personal database system,and a personal database system is characterized by ________.

A)the DBMS removing the metadata from the database

B)the DBMS product taking the role of the DBMS and the database application generator

C)the DBMS not supporting indexes

D)the DBMS product being limited to a maximum of ten tables in any given database

Q4) Microsoft Access uses the AutoNumber data type to create surrogate keys.

A)True

B)False

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Chapter 16: Getting Started With Systems Analysis and Design

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Sample Questions

Q1) Information systems are used to support business processes.

A)True

B)False

Q2) Data is composed of ________.

A)facts

B)numbers

C)information

D)Both A and B are correct

Q3) Data is facts and numbers.

A)True

B)False

Q4) Briefly define and discuss what an information system is,the five components that comprise an information system,and what the purpose of an information system is.

Q5) Hardware is installed and tested during the ________ step of the SDLC.

A)requirements analysis

B)component design

C)implementation

D)systems maintenance

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Q6) What are the five steps or stages of the systems development life cycle (SDLC)?

Chapter 17: E-R Diagrams and the IDEF1X Standard

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Sample Questions

Q1) In IDEF1X,a category cluster includes BLACK and WHITE,which are the only possible categories.This is an IDEF1X ________.

A)complete category cluster

B)incomplete category cluster

C)inherited category cluster

D)inconclusive category cluster

Q2) In IDEF1X,the named set of values that an attribute can have is called a ________.

A)domain

B)base domain

C)type domain

D)domain cluster

Q3) In IDEF1X,a type domain allows ________.

A)different data types

B)different values

C)greater specificity of values

D)default values

Q4) What symbols are used in IDEF1X diagrams to represent cardinalities?

Q5) What are the IDEF1X equivalents of 1:1,1:N and N:M relationships?

Q6) What is IDEF1X?

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Chapter 18: E-R Diagrams and the UML Standard

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Sample Questions

Q1) Persistent means that data should continue to exist in the database even if the object that processes it is destroyed.

A)True

B)False

Q2) What format is used for weak entities in UML-style E-R diagrams?

Q3) UML-style E-R diagrams introduce object-oriented notation that is of limited practical value in traditional,relational database design.

A)True

B)False

Q4) What cardinality format is used in UML-style E-R diagrams?

Q5) In the UML-style entity class ORDERS shown above,"GetOrderNo( )" is a ________. A)private method

B)protected method

C)public constraint

D)public method

Q6) In UML-style E-R diagrams,a weak entity is shown by placing a filled-in diamond on the parent of the weak entity.

A)True

B)False

Page 20

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Chapter 19: Getting Started With Mysql Workbench Data

Modeling Tools

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Sample Questions

Q1) Users should create a MySQL Workspace folder to hold documents created with the MySQL Workbench.

A)True

B)False

Q2) The MySQL Installer for Windows can be used to install the MySQL Workbench.

A)True

B)False

Q3) In the Windows 8 or 8.1 OS,to start working with the MySQL Workbench use the command Start | All Programs | MySQL | MySQL Workbench 6.1 CE.

A)True

B)False

Q4) In the MySQL Table Editor,the abbreviation AI stands for AUTO_INCREMENT.

A)True

B)False

Q5) Describe the MySQL Connector/ODBC and how to install it.

Q6) Describe how to set table properties in a MySQL Workbench database design.

Q7) Table names are edited in the MySQL EER Component Editor.

A)True

B)False

Q8) Describe how to create relationships in a MySQL Workbench database design. Page 21

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Chapter 20: Getting Started With Microsoft Visio 2013

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Sample Questions

Q1) In Microsoft Visio 2013,when the Entity object is placed in a diagram,it is labeled as a(n)________.

A)entity

B)table

C)relationship

D)dynamic connector

Q2) In Microsoft Visio 2013,a group of template objects is called a stencil.

A)True

B)False

Q3) In Microsoft Visio 2013,we can create data models using ________.

A)Entity and Dynamic connector objects

B)Entity and Relationship connector objects

C)Category and Dynamic connector objects

D)We cannot create data models in Microsoft Visio 2013.

Q4) In Microsoft Visio 2013,we can create database designs using Entity and Dynamic connector objects.

A)True

B)False

Q5) In Microsoft Visio 2013,how do we create database designs?

Q6) In Microsoft Visio 2013,how do we create data models?

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Chapter 21: Data Structures for Database Processing

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Sample Questions

Q1) The DBMS creates ________,also called blocks,on its direct access fields.

A)psuedo records

B)physical records

C)secondary file records

D)key file records

Q2) A tree structure cannot be represented using indexes.

A)True

B)False

Q3) Keys may include all of the following except ________.

A)primary keys

B)unique secondary keys

C)nonunique secondary keys

D)nonunique primary keys

Q4) A ________ is a file that has no repeating groups.

A)flat file

B)stacked file

C)record file

D)key file

Q5) How does a DBMS store data on its direct access files?

Q6) What is a set?

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Chapter 22: the Semantic Object Model

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Sample Questions

Q1) A semantic object must represent something with a physical existence.

A)True

B)False

Q2) The cardinalities of an attribute operate only between the attribute and the container of the attribute.

A)True

B)False

Q3) A simple attribute has only one element.

A)True

B)False

Q4) Whether a developer uses an E-R model or a semantic object model,the eventual database design that is created should be exactly the same.

A)True

B)False

Q5) Semantic objects are grouped into ________.

A)composites

B)entities

C)objects

D)classes

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Chapter 23: Getting Started With Web Servers, PHP, and the

Netbeans IDE

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Sample Questions

Q1) For a workstation running the Windows operating system,the additional user file system permissions ________ must be granted to the Users group at the wwwroot folder.

A)Read and Write

B)Modify and Read

C)Modify and Write

D)Read and Execute

Q2) What is theNetBeans IDE?

Q3) Which of the following is not true about PHP dynamic extension files (dll files)?

A)They can be shared by many applications.

B)They allow php to make application calls directly to the DBMS rather than using ODBC.

C)There is no relationship between the php.ini file and the dll files.

D)They enable support for PHP Data Objects (PDO).

Q4) The default Web page for the IIS Web server is index.html.

A)True

B)False

Q5) What is PHP?

Q6) What are the Java JVM,JRE,SDK,and NetBeans? How do they relate?

Page 26

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Chapter 24: Business Intelligence Systems

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Sample Questions

Q1) The metadata maintained by a reporting system database describes all of the following except ________.

A)triggers

B)users

C)groups

D)reports

Q2) Which of the following is not a reason that operational data are difficult to read?

A)Dirty data

B)Large values

C)Non-integrated data

D)Missing values

Q3) RFM analysis can be done using SQL ________.

A)user-defined functions

B)stored procedures

C)triggers

D)union queries

Q4) Cluster analysis is a commonly used technique in supervised data mining.

A)True

B)False

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Chapter 25: Big Data

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Sample Questions

Q1) For database/XML applications,a good rule to follow is that elements are used to carry data and attributes are used to carry metadata.

A)True

B)False

Q2) XML documents and XML Schemas are created in different languages.

A)True

B)False

Q3) An example of a document database is ________.

A)Dynamo

B)Couchbase Server

C)Bigtable

D)Neo4j

Q4) XML documents that are not-type-valid can still be ________.

A)DTD-valid

B)XML-valid

C)DTD-compliant

D)proper XML documents

Q5) A complex element must have more than one simple element.

A)True

B)False

28

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