WGU C170 QUESTIONS AND ANSWERS
LATEST UPDATE
Associative Entity
All relationships for the (...) entity should be many.
Attribute
An (...) is a property or characteristic of an entity.
Binary relationship
A (...) is a relationship between two entity types.
Cardinality
(...) represents the maximum number of entities that can be involved in a particular
relationship.
Cascade Delete
Will delete all records that reference the primary key
Database
A (...) is a collection of information that is organized so that it can easily be accessed,
managed, and updated.
E-R model
An (...) is a data model for describing a database in an abstract way.
Entity
An (...) is an object or event in our environment that we want to keep track of.
Intersection Data
Associated with the concatenation of two segments
Modality
(...) represents the minimum number of entity occurrences that can be involved in a
relationship.
Ternary Relationship
A (...) relationship is when three entities participate in the relationship.
Unary Relationships
(...) relationships associate occurrences of an entity type with other occurrences of the
same entity type.
Unique Identifier
A (...) is any identifier which is guaranteed to be unique among all identifiers used for
those objects and for a specific purpose.
Data encryption
When data is (...), it is changed, bit by bit or character by character, into a form that
looks totally garbled. It can and must be reconverted, or decrypted, back to its original
form to be of use.
Data normalization
Is a methodology for organizing attributes into tables so that redundancy among the
non-key attributes is eliminated.
Data volatility
Describes how often stored data is updated.
, Data Volume Assessment
Understanding of how much data will be in a database or a table within a database
Denormalization
The act of duplicating data in a database for performance or the preservation of
historical information
Disaster recovery
Involves rebuilding an entire information system or significant parts of one after a
catastrophic natural disaster such as a hurricane, tornado, earthquake, building
collapse, or even a major fire
Index
Used to help a DBMS find data quickly
Logical view
Is a mapping onto a physical table or tables that allows an end user to access only a
specified portion of data.
Response time
Is the delay from the time that the Enter Key is pressed to execute a query until the
result appears on screen.
Throughput
Is the measure of how many queries from simultaneous users must be satisfied in a
given period of time by the application set and the database that it supports.
Client/server architecture
(...) architecture is a network architecture in which the server manages services
consumed by the client. It is also known as two-tier architecture.
Database directory
(...) is an organized repository of databases that stores attributes such as the database
character set and collation.
GUI (graphical user interface)
(...) is a computer program that enables a user to communicate with a computer through
the use of graphical icons.
MySQL
(...) is an open source RDBMS based on SQL (structure query language) and used for
adding, removing, and modifying information in the database.
Option file
(...) is an appropriate way of specifying commonly used options on the command line
while executing a program.
RDBMS (relational database management system)
(...) is a program that lets you create, update, and administer a relational database.
Schema
In a relational database, a (...) defines tables, fields in each table, and relationships
between fields and tables.
DB2
(...) is a relational database management system product from IBM that serves a
number of operating system platforms.
DCL
(...) is used to control access to data stored in a database.
DDL
LATEST UPDATE
Associative Entity
All relationships for the (...) entity should be many.
Attribute
An (...) is a property or characteristic of an entity.
Binary relationship
A (...) is a relationship between two entity types.
Cardinality
(...) represents the maximum number of entities that can be involved in a particular
relationship.
Cascade Delete
Will delete all records that reference the primary key
Database
A (...) is a collection of information that is organized so that it can easily be accessed,
managed, and updated.
E-R model
An (...) is a data model for describing a database in an abstract way.
Entity
An (...) is an object or event in our environment that we want to keep track of.
Intersection Data
Associated with the concatenation of two segments
Modality
(...) represents the minimum number of entity occurrences that can be involved in a
relationship.
Ternary Relationship
A (...) relationship is when three entities participate in the relationship.
Unary Relationships
(...) relationships associate occurrences of an entity type with other occurrences of the
same entity type.
Unique Identifier
A (...) is any identifier which is guaranteed to be unique among all identifiers used for
those objects and for a specific purpose.
Data encryption
When data is (...), it is changed, bit by bit or character by character, into a form that
looks totally garbled. It can and must be reconverted, or decrypted, back to its original
form to be of use.
Data normalization
Is a methodology for organizing attributes into tables so that redundancy among the
non-key attributes is eliminated.
Data volatility
Describes how often stored data is updated.
, Data Volume Assessment
Understanding of how much data will be in a database or a table within a database
Denormalization
The act of duplicating data in a database for performance or the preservation of
historical information
Disaster recovery
Involves rebuilding an entire information system or significant parts of one after a
catastrophic natural disaster such as a hurricane, tornado, earthquake, building
collapse, or even a major fire
Index
Used to help a DBMS find data quickly
Logical view
Is a mapping onto a physical table or tables that allows an end user to access only a
specified portion of data.
Response time
Is the delay from the time that the Enter Key is pressed to execute a query until the
result appears on screen.
Throughput
Is the measure of how many queries from simultaneous users must be satisfied in a
given period of time by the application set and the database that it supports.
Client/server architecture
(...) architecture is a network architecture in which the server manages services
consumed by the client. It is also known as two-tier architecture.
Database directory
(...) is an organized repository of databases that stores attributes such as the database
character set and collation.
GUI (graphical user interface)
(...) is a computer program that enables a user to communicate with a computer through
the use of graphical icons.
MySQL
(...) is an open source RDBMS based on SQL (structure query language) and used for
adding, removing, and modifying information in the database.
Option file
(...) is an appropriate way of specifying commonly used options on the command line
while executing a program.
RDBMS (relational database management system)
(...) is a program that lets you create, update, and administer a relational database.
Schema
In a relational database, a (...) defines tables, fields in each table, and relationships
between fields and tables.
DB2
(...) is a relational database management system product from IBM that serves a
number of operating system platforms.
DCL
(...) is used to control access to data stored in a database.
DDL
