Entity supertype - Study guides, Class notes & Summaries

ISDS 3003 Final Exam Review 2023 complete solution A relational database is ________ A. a self-describing collection of related tables B. a library of queries and data files for querying C. a set of applications and the data sets for those applications D. a set of metadata E. a collection of forms and reports that support a given purpose Data mining applications are used to accomplish all of the following tasks except ________ A. incorporate results into some other report/system B. ...

___ is the result of adding more semantic constructs to the original entity relationship (ER) model. - -Extended entity relationship model -___ depicts the arrangement of higher-level entity supertypes (parent entities) and lower-level entity subtypes (child entities). - -Specialization hierarchy -The attribute in the supertype entity that determines to which entity subtype each supertype occurrence is related. - -subtype discriminator -Subtypes that contain a unique subset of the super...

COSC 61 Review Questions and Answers Graded A+ 1) The identifier of the entity becomes the ________ of the corresponding table. A) primary key B) foreign key C) supertype D) subtype - Answers a 2) The ideal primary key is ________. A) short B) numeric C) fixed D) A and B E) A, B, and C - Answers e 3) A surrogate key should be considered when ________. A) a relationship is M:N B) a composite key is required C) the key contains a lengthy text field D) the key contains a number E) ...

Attribute - property or characteristic of an entity type that is of interest Business rules - Statements that define or constrain some aspect of the business logic Completeness Constraint - Determines whether an instance of a supertype must also be a member of at least one subtype Conceptual schema - the view of data architect/administrator Data - stored representations of meaningful objects and events Database - organized collection of logically related data Database Management System -...

INF2603 ASSIGNMENT 2 SEMESTER 2. INF2603 - Databases I. What is a subtype discriminator? Given an example of its use. (3) A subtype discriminator is the attribute in the supertype entity that is used to determine to which entity subtype the supertype occurrence is related. For any given supertype occurrence, the value of the subtype discriminator will determine which subtype the supertype occurrence is related to. For example, an EMPLOYEE supertype may include the EMP_TYPE value "P" to ind...

entity supertype - -contains common characteristics -entity subtypes - -each contain their own unique characteristics -example supertype - -EMPLOYEE is the supertype of PILOT -example subtypes - -PILOT is a subtype of EMPLOYEE -inheritance - -enables an entity subtype to inherit the attributes and relationships of the supertype (primary key) -subtype discriminator - -is the attribute in the supertype entity that determines to which subtype the supertype occurrence is related -D...

What does the abbreviation "PSR" stand? Product, service, resource Industries CPQ supports which of these business activities? The configuration, pricing, and quotation of products. True or False: Context awareness is an important feature of Industries CPQ. True The design of the Cart is based on... Cards, Layouts, and Templates True or False: Pricing in Industries CPQ is designed as a component-based system with reusable items to allow seamless transition to new pricing structures. T...

INF3703 STUDY NOTES. An informaton system is composed of people, hardware, software, databases, applicatons and procedures  Systems analysis is the process that establishes the need for and the scope of an informaton system  Systems development – is the process of creatng an informaton system  The performance of an information system depends on DB design and implementaton; app design and implementation; and administrative procedures  DB Design objectves – create complete, ...

Analysis and Design of Information Systems Preface v 1. Introduction 1 What Is, Is................................................................................................. 1 Just What Is a Complex Project? ............................................................. 3 The Tiers of Software Development........................................................ 6 User Interface............................................................................................ 6 Tools............

1) Which of the following is a generic entity type that has a relationship with one or more subtypes? A) Megatype B) Supertype C) Subgroup D) Class Answer: B Diff: 1 Page Ref: 113 Topic: Representing Supertypes and Subtypes AACSB: Use of Information Technology 2) Given the following entities, which of the choices below would be the most complicated? Automobile: VIN, EngineSize, NumberOfDoors, NumberOfPassengers, FuelType, Transmission SUV: VIN, EngineSize, NumberOfPassengers, NoWheel...