Hierarchical database - Study guides, Class notes & Summaries

TYPICAL QUESTIONS & ANSWERS OBJECTIVE TYPE QUESTIONS Each question carries 2 marks. Choose the correct or best alternative in the following: Q.1 In the relational modes, cardinality is termed as: (A) Number of tuples. (B) Number of attributes. (C) Number of tables. (D) Number of constraints. Ans: A Q.2 Relational calculus is a (A) Procedural language. (B) Non- Procedural language. (C) Data definition language. (D) High level language. Ans: B ...

WGU C175 Data Management Foundations Final Exam Questions and Answers 2024/2025 Graded A+ . Which of the following is true of business rules? entity A(n) _______ is anything about which data are to be collected and stored. XML/Hybrid data model Oracle 11g is an example of the _______. entity instance Each row in the relational table is known as a(n) relational data model MySQL is an example of the _______. attribute A(n) _______ is the equivalent of a field in a file system. entity re...

INSY 3304 FINAL REVIEW QUESTIONS & ANSWERS 2024/2025 Limitations of a file system in data management - ANSWERS- Data dependence - Structural dependence - Data redundancy leading to deletion, insertion, and modification anomalies Components of a DBMS/database Environment - ANSWERS- hardware, software, people, procedure, and data Data Modeling - ANSWERSis iterative and progressive Database models - ANSWERSConceptual and Implementation Conceptual - ANSWERSThe conceptual model pro...

What is a broad definition of data? Raw facts that are captured on printed or digital media What are data? Facts that are collected and stored in a database system What is a determining characteristic of unstructured data? It does not follow a data model. Which is true about flat files? They contain no internal hierarchical organization. Which technology has no internal hierarchy? Flat files How were data retrieved before database management systems? Sequentially from simple files

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM ACTUAL EXAM 2 LATEST VERSIONS 300 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (100% CORRECT AND VERIFIED ANSWERS)LATEST 2023|ALREADY GRADED A+ 2 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 What is an important ...

WGU C724 Information Systems Management Unit 4 Test A tuple is one record or data set in a row -Answer-What are tuples and how are they used in databases? a.) A tuple is a collection of sequenced data fields b.) A tuple is one record or data set in a row c.) A tuple is a database field The flat file design is a single table database -Answer-What is the best description of a flat file database? a.) Flat file databases are hierarchical in nature. b.) Flat file databases are prevalent tod...

In _______, data from transactions are collected over time and then processed all at once. o :# batch processing Which view of data deals with how the data is actually formatted and located? o :# Physical view A field that uniquely identifies each record. o :# Primary key A data field that represents a description or characteristic of some entity. o :# Attribute In the object-oriented database model, this term is the equivalent to a field in a relational model. o :# Attribute Typic...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM ACTUAL EXAMS LATEST VERSIONS 300 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (100% CORRECT AND VERIFIED ANSWERS) ALREADY GRADED A+ What does modality refer to? How does it appear on ER diagram? - ANSWER- Refers 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 - A...

What is a broad definition of data? - correct answer Raw facts that are captured on printed or digital media What are data? - correct answer Facts that are collected and stored in a database system What is a determining characteristic of unstructured data? - correct answer It does not follow a data model. Which is true about flat files? - correct answer They contain no internal hierarchical organization. Which technology has no internal hierarchy? - correct answer Flat files How w...

INS3707 Assignment 1 (DETAILED ANSWERS) Semester 2 2024 - DISTINCTION GUARANTEED - DISTINCTION GUARANTEED - DISTINCTION GUARANTEED Answers, guidelines, workings and references ..... QUESTION 1 Choose the correct option from the list provided for each question. Write ONLY the correct letter of the alphabet next to the question number on your answer sheet, Example: 1.1 C. Each question counts 1 mark. 1.1 …. Is a list of words that can be used to retrieve information in an information s...