WGU C175 EXAM WITH 100% VERIFIED SOLUTIONS!!
Flat Files - ANSWER>>a file having no internal hierarchy
Hashed Files - ANSWER>>A file that has been encrypted for security purposes.
Heap File - ANSWER>>An unsorted set of records.
Information - ANSWER>>The transformation of raw data into useful facts.
Punch Card - ANSWER>>A card that is perforated and can hold commands or data.
Structured Data - ANSWER>>Information with a high degree of organization.
Unstructured Data - ANSWER>>Data without structure, for example text
Binary Relationship - ANSWER>>Association between two entity types.
Unary Relationship - ANSWER>>Associate occurrence of an entity type with other
occurrences of the same entity type.
Cardinality - ANSWER>>Maximum number of entities that can participate in a specific
relationship.
E-R Model
,*E-R = Entity - Relationship - ANSWER>>Diagram of entities together with their
attributes and the relationship among them.
Intersection Data - ANSWER>>It is data that describes a many-to-many relationship.
Modality - ANSWER>>It is a minimum number of entity occurrences that can be
involved in a relationship.
One-to-one Binary Relationship - ANSWER>>It means that one occurrence of one
entity type is related to one and only one occurrence of the other entity type and vice
versa.
Ternary Relationship - ANSWER>>It is a relationship in which three different types of
entities participate.
Unique identifier - ANSWER>>It is used uniquely to identify every record in any
database table.
Attribute - ANSWER>>A property, characteristic or fact we know about an entity.
"A salesperson works in one office."
What is the name of this relationship? - ANSWER>>One-to-one binary relationship
"A salesperson sells to many customers."
What is the name of this relationship? - ANSWER>>One-to-many binary relationship
"A salesperson is authorized to sell many products, and a product can be sold by many
salespersons."
, What is the name of this relationship? - ANSWER>>Many-to-many binary relationship
What is the positioning and meaning for Cardinality and Modality on an E-R model? -
ANSWER>>Cardinality is the outer symbol; represents the maximum.
Modality is the inner symbol; represents the minimum.
"A salesperson works in a minimum of one and a maximum of one office, and an office
may be occupied by or assigned to a minimum of zero and a maximum of one
salesperson." - ANSWER>>
"A salesperson can have no customers or many customers." ANSWER>>
Discuss the ER model for "Every sales person is authorized to sell at least one or many
products and every product can be sold by at least one or many salespeople."
ANSWER>>
"One salesperson backs-up another salesperson."
Name this model. ANSWER>>One-to-one unary relationship
"A salesperson manages zero to many other salespersons, and a salesperson is
managed by exactly one other salesperson."
What is the name of this model? - ANSWER>>One-to-many unary relationship
"A product can either be part of no other products or be part of several other products,
and a product can either be composed of no other products or be composed of several
other products."
Flat Files - ANSWER>>a file having no internal hierarchy
Hashed Files - ANSWER>>A file that has been encrypted for security purposes.
Heap File - ANSWER>>An unsorted set of records.
Information - ANSWER>>The transformation of raw data into useful facts.
Punch Card - ANSWER>>A card that is perforated and can hold commands or data.
Structured Data - ANSWER>>Information with a high degree of organization.
Unstructured Data - ANSWER>>Data without structure, for example text
Binary Relationship - ANSWER>>Association between two entity types.
Unary Relationship - ANSWER>>Associate occurrence of an entity type with other
occurrences of the same entity type.
Cardinality - ANSWER>>Maximum number of entities that can participate in a specific
relationship.
E-R Model
,*E-R = Entity - Relationship - ANSWER>>Diagram of entities together with their
attributes and the relationship among them.
Intersection Data - ANSWER>>It is data that describes a many-to-many relationship.
Modality - ANSWER>>It is a minimum number of entity occurrences that can be
involved in a relationship.
One-to-one Binary Relationship - ANSWER>>It means that one occurrence of one
entity type is related to one and only one occurrence of the other entity type and vice
versa.
Ternary Relationship - ANSWER>>It is a relationship in which three different types of
entities participate.
Unique identifier - ANSWER>>It is used uniquely to identify every record in any
database table.
Attribute - ANSWER>>A property, characteristic or fact we know about an entity.
"A salesperson works in one office."
What is the name of this relationship? - ANSWER>>One-to-one binary relationship
"A salesperson sells to many customers."
What is the name of this relationship? - ANSWER>>One-to-many binary relationship
"A salesperson is authorized to sell many products, and a product can be sold by many
salespersons."
, What is the name of this relationship? - ANSWER>>Many-to-many binary relationship
What is the positioning and meaning for Cardinality and Modality on an E-R model? -
ANSWER>>Cardinality is the outer symbol; represents the maximum.
Modality is the inner symbol; represents the minimum.
"A salesperson works in a minimum of one and a maximum of one office, and an office
may be occupied by or assigned to a minimum of zero and a maximum of one
salesperson." - ANSWER>>
"A salesperson can have no customers or many customers." ANSWER>>
Discuss the ER model for "Every sales person is authorized to sell at least one or many
products and every product can be sold by at least one or many salespeople."
ANSWER>>
"One salesperson backs-up another salesperson."
Name this model. ANSWER>>One-to-one unary relationship
"A salesperson manages zero to many other salespersons, and a salesperson is
managed by exactly one other salesperson."
What is the name of this model? - ANSWER>>One-to-many unary relationship
"A product can either be part of no other products or be part of several other products,
and a product can either be composed of no other products or be composed of several
other products."
