WGU c170
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Últimos notas y resúmenes WGU c170
WGU C170 Chp 1, With Complete Verified Solution 2024. 
AREA 
in DB2, a named section of permanent storage space that is reserved to store the database. 
associative entity 
another name for composite entity, bridge entity or linking table 
bridge entity 
another name for composite entity, associative entity or linking table 
candidate key 
a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. 
closure 
A property of relational operators that p...
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WGU C170 Chp 1, With Complete Verified Solution 2024. 
AREA 
in DB2, a named section of permanent storage space that is reserved to store the database. 
associative entity 
another name for composite entity, bridge entity or linking table 
bridge entity 
another name for composite entity, associative entity or linking table 
candidate key 
a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. 
closure 
A property of relational operators that p...
WGU C170 Chp 1, With Complete Verified Solution 2024. 
AREA 
in DB2, a named section of permanent storage space that is reserved to store the database. 
associative entity 
another name for composite entity, bridge entity or linking table 
bridge entity 
another name for composite entity, associative entity or linking table 
candidate key 
a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. 
closure 
A property of relational operators that p...
- Examen
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-
WGU C170•WGU C170
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WGU C170 Chp 1, With Complete Verified Solution 2024. 
AREA 
in DB2, a named section of permanent storage space that is reserved to store the database. 
associative entity 
another name for composite entity, bridge entity or linking table 
bridge entity 
another name for composite entity, associative entity or linking table 
candidate key 
a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. 
closure 
A property of relational operators that p...
Sales order 1NF 
 
WGU C170 Data Management - Applications Performance Assessment. 
 
 
EXPLANATION: 
I am going to call this table the "Order Table" I also need to make sure that this table contains a primary Key, in this particular table I am going to make the “OrderID” and “DonutID” the Primary Key (composite key), the reason I chose to use OrderID and DonutID as the primary key is because Order ID or DonutID by themselves do not guarantee Uniqueness but when combined uniqueness ...
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Sales order 1NF 
 
WGU C170 Data Management - Applications Performance Assessment. 
 
 
EXPLANATION: 
I am going to call this table the "Order Table" I also need to make sure that this table contains a primary Key, in this particular table I am going to make the “OrderID” and “DonutID” the Primary Key (composite key), the reason I chose to use OrderID and DonutID as the primary key is because Order ID or DonutID by themselves do not guarantee Uniqueness but when combined uniqueness ...
WGU C170 Data Management Applications (over 200 Questions & Answers) 
 
What is a table? 
A table is a persistent representation of a logical relation that is a relation whose contents can be saved for permanent use. 
What are the characteristics of a relational table? 
The characteristics of a relational table are that a table is perceived as a two-dimensional structure composed of rows and columns, each row (tuple) represents a single entity occurrence within the set, each column represents an...
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WGU C170 Data Management Applications (over 200 Questions & Answers) 
 
What is a table? 
A table is a persistent representation of a logical relation that is a relation whose contents can be saved for permanent use. 
What are the characteristics of a relational table? 
The characteristics of a relational table are that a table is perceived as a two-dimensional structure composed of rows and columns, each row (tuple) represents a single entity occurrence within the set, each column represents an...
WGU C170 Data Management Applications (over 400 Questions & Answers) 
 
A salesperson is authorized to sell many products and a product can be sold by many salespersons. 
 
Which kind of binary relationship does this scenario describe? 
 
A One-to-one 
B One-to-many 
C One-to-one binary 
D Many-to-many 
D 
Which kind of relationship is displayed in this entity-relationship diagram? 
 
A Many-to-many unary 
B Many-to-many binary 
C One-to-one unary 
D One-to-one binary 
A 
Which kind of relations...
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WGU C170 Data Management Applications (over 400 Questions & Answers) 
 
A salesperson is authorized to sell many products and a product can be sold by many salespersons. 
 
Which kind of binary relationship does this scenario describe? 
 
A One-to-one 
B One-to-many 
C One-to-one binary 
D Many-to-many 
D 
Which kind of relationship is displayed in this entity-relationship diagram? 
 
A Many-to-many unary 
B Many-to-many binary 
C One-to-one unary 
D One-to-one binary 
A 
Which kind of relations...
WGU c170 PRE-ASSESSMENT: DATA MANAGEMENT - APPLICATIONS (FJO1) PFJO WITH COMPLETE SOLUTION 
 
PRE-ASSESSMENT: DATA MANAGEMENT - APPLICATIONS (FJO1) PFJO 
Attempt #1 Status: Passed 
 
1. 
A salesperson is authorized to sell many products and a product can be sold by many salespersons. Which kind of binary relationship does this scenario describe? 
 
	YOUR ANSWER	CORRECT ANSWER 
One-to-one		 
One-to-many		 
Many-to-many	 
 	 
 
One-to-one binary		 
 
2. 
 
 
 
 
 
 
 
 
Which kind of relationsh...
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WGU c170 PRE-ASSESSMENT: DATA MANAGEMENT - APPLICATIONS (FJO1) PFJO WITH COMPLETE SOLUTION 
 
PRE-ASSESSMENT: DATA MANAGEMENT - APPLICATIONS (FJO1) PFJO 
Attempt #1 Status: Passed 
 
1. 
A salesperson is authorized to sell many products and a product can be sold by many salespersons. Which kind of binary relationship does this scenario describe? 
 
	YOUR ANSWER	CORRECT ANSWER 
One-to-one		 
One-to-many		 
Many-to-many	 
 	 
 
One-to-one binary		 
 
2. 
 
 
 
 
 
 
 
 
Which kind of relationsh...
WGU C170 Chp 1, With Complete Verified Solution 2024. 
AREA 
in DB2, a named section of permanent storage space that is reserved to store the database. 
associative entity 
another name for composite entity, bridge entity or linking table 
bridge entity 
another name for composite entity, associative entity or linking table 
candidate key 
a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. 
closure 
A property of relational operators that p...
- Examen
- • 4 páginas's •
-
WGU C170•WGU C170
Vista previa 1 fuera de 4 páginas
WGU C170 Chp 1, With Complete Verified Solution 2024. 
AREA 
in DB2, a named section of permanent storage space that is reserved to store the database. 
associative entity 
another name for composite entity, bridge entity or linking table 
bridge entity 
another name for composite entity, associative entity or linking table 
candidate key 
a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. 
closure 
A property of relational operators that p...
1.1.1 - Conceptual Schema - ER Model 
Tables: Customer, DonutOrder, Donut - Customer: 
PK - CustomerID 
Rest are customer related fields 
DonutOrder: 
FK - CustomerID, 
FK - DonutID 
Qty, SpecialNotes 
Donut: 
PK - DonutID 
Rest are donut fields 
Relationships: 
Customer - 1:n Identifying - DonutOrder 
DonutOrder - n:1 Identifying - Donut 
Why are the relationships in 1.1.1 Identifying? - The PK's of Customer and Donut are included in 
the composite primary key of DonutOrder. 
2.1.1 - Physical ...
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1.1.1 - Conceptual Schema - ER Model 
Tables: Customer, DonutOrder, Donut - Customer: 
PK - CustomerID 
Rest are customer related fields 
DonutOrder: 
FK - CustomerID, 
FK - DonutID 
Qty, SpecialNotes 
Donut: 
PK - DonutID 
Rest are donut fields 
Relationships: 
Customer - 1:n Identifying - DonutOrder 
DonutOrder - n:1 Identifying - Donut 
Why are the relationships in 1.1.1 Identifying? - The PK's of Customer and Donut are included in 
the composite primary key of DonutOrder. 
2.1.1 - Physical ...
First Normal Form -- when all non-key columns depend on the primary key 
- a table with a primary key is in first normal form 
- a table with no duplicate rows is in first normal form 
Second Normal Form -- when all non-key columns depend on the whole primary key 
- cannot depend on part of a composite primary key 
- a table with a simple primary key is automatically in second normal form 
A table with a simple primary key must be in what normal form? -- second normal form or higher 
Third Norma...
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First Normal Form -- when all non-key columns depend on the primary key 
- a table with a primary key is in first normal form 
- a table with no duplicate rows is in first normal form 
Second Normal Form -- when all non-key columns depend on the whole primary key 
- cannot depend on part of a composite primary key 
- a table with a simple primary key is automatically in second normal form 
A table with a simple primary key must be in what normal form? -- second normal form or higher 
Third Norma...
access plan - A set of instructions generated at application compilation time that is created and 
managed by a DBMS. The access plan predetermines how an application's query will access the 
database at run time. 
algorithms - A process or set of operations in a calculation. 
automatic query optimization - A method by which a DBMS finds the most efficient access path 
for the execution of a query. 
B-tree index - An ordered data structure organized as an upside-down tree. 
bitmap index - An in...
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access plan - A set of instructions generated at application compilation time that is created and 
managed by a DBMS. The access plan predetermines how an application's query will access the 
database at run time. 
algorithms - A process or set of operations in a calculation. 
automatic query optimization - A method by which a DBMS finds the most efficient access path 
for the execution of a query. 
B-tree index - An ordered data structure organized as an upside-down tree. 
bitmap index - An in...