Composite primary key - Samenvattingen en Aantekeningen

WGU C170 Data Management - Applications|Latest Update Complete with A+ Graded Answers Domain In data modeling, the construct used to organize and describe an attribute's set of possible values. Primary key (PK) An identifier composed of one or more attributes that uniquely identifies a row. Also, a candidate key selected as a unique entity identifier. A minimal superkey. Key One or more attributes that determine other attributes. Determination The role of a key. In the c...

AREA - Answer In DB2, a named section of permanent storage space that is reserved to store the database. associative entity - Answer See composite entity. bridge entity - Answer See composite entity. candidate key - Answer A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. See key. closure - Answer A property of relational operators that permits the use of relational algebra operators on existing tables (relations...

Exam 2- Chapter 3, GIS, GIS Exam 1 and 2, GIS // Midterm, Geospacial Technology Chapter 1-3, Geospatial, ArcGIS - ESRI, GIS Test one, Geodesy - Week 4 - ESRI Online Course, Geospatial Test 1, GeoScience Final, Geospatial Data and Technology, GIS Test Questions and Answers 100% Pass 1) SQL is a data sublanguage, not a complete programming language. - Answer: TRUE 2) When using SQL to create a table, a column is defined by declaring, in this order: data type, column name, and optional cons...

business rule Ans- A description of a policy, procedure, or principle within an organization. For example, a pilot cannot be on duty for more than 10 hours during a 24-hour period, or a professor may teach up to four classes during a semester. candidate key Ans- A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. See key. composite entity Ans- An entity designed to transform an M:N relationship into two 1:M relationships. The co...

CLC 056 exam Analyzing Contract Costs Exam (contains 55 questions) • Here is your test result.The dots represent the choices you have made. • The highlighted questions are the questions you have missed. • Remediation Accessed shows whether you accessed those links.'N' represents links not visited and 'Y' represents visited links. The offeror customarily treats similar costs as “other direct costs” under similar circumstances The proposed cost benefits only the proposed contract work Th...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM Questions With Verified Answers (100% Correct) Graded A+. What does modality refer to? How does it appear on ER diagram? - ANSWERRefers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key...

WGU C170 Data Management SQL Problem Solving Questions and ChatGPT' Solutions 2024/2025 Structural Constraints: - correct answer Rules that apply to all relational databases and dictate the structure of data. Business Policies: - correct answer Specific rules for a given database and application that govern the data. NULL - correct answer Represents missing data in a special value format. Operator - correct answer A symbol that calculates a value based on one or more operands. IS...

3 commonly used wavelengths in today's fiber-optic systems? Ans-Multimode fiber (850 and 1310 nm), Single-mode fiber (1310 and 1550 nm), Fiber to home/business ( nm) Absorption Ans-Second loss factor, a composite of light interaction with the atomic structure of the glass. Involves the conversion of optical power to heat. Backbone Ans-Main fiber distribution. The primary path for data traffic to and from destinations and sources in the campus network. Chromatic Dispersion Ans-The bro...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM Questions With Verified Answers 2024/2025 (Graded A+) What does modality refer to? How does it appear on ER diagram? - ANSWERRefers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key val...

WGU C170 Prerequisite pretest Exam training Questions with Rated A + Marking Scheme Latest 2024/2025 AREA - correct answer In DB2, a named section of permanent storage space that is reserved to store the database. associative entity - correct answer See composite entity. bridge entity - correct answer See composite entity. candidate key - correct answer A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. See key. closure - cor...