Db model Study guides, Revision notes & Summaries

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...

CFA Level 1 - 101 Must Knows 368 Questions with Verified Answers Addition Rule of Probability - CORRECT ANSWER ADDITION: P(A or B) = P(A) + P(B) - P(AB) Roy's Safety First Criterion - CORRECT ANSWER Safety First Ratio = (E(R) - Rₜ) / σ Larger ratio is better If (Rₜ) is risk free rate, then it becomes Sharpe Ratio Sharpe Ratio - CORRECT ANSWER Sharpe Ratio = (E(R) - RFR) / σ Larger ratio is better If (Rt) is higher than RFR, then it becomes Safety First Ratio Centra...

Hearing conservation certification Questions and Answers, Graded A+ CAOHC's primary objective is to: a. Promote hearing loss prevention by enhancing the quality of occupational hearing conservation practices b. Provide input to legislative action regarding occupational hearing program implementation c. Train council members in occupational hearing program implementation d. Train audiologists in occupational hearing program implementation A A COHC is NOT able to train other OHCs to ...

DoD Hearing Technician: Chapters 1-12 - Review Questions and Answers Which occupational sector accounts for the highest incidence of noise -induced hearing loss: a. Transportation b. Construction c. Mining d. Manufacturing d Noise exposures are considered likely to be harmful if shouting is required in order to communicate to a person _____feet away. a. 4 b. 3 c. 2 d. 5 b The primary role of CAOHC is: a. Advocate for comprehensive programs tha...

WGU C706 Secure Software Design Exam (Latest 2023/ 2024 Update) | Questions and Verified Answers| 100% Correct| Grade A Q: A hacker has used a design flaw in an application to obtain unauthorized access to the application. Which type of attack has occurred? A buffer overflow B backdoor C escalation of privileges D maintenance hook Answer: C Q: During the recent development of a new application, the customer requested a change. You must implement this change according t...

external schema - Answer-Also called a subschema, this is a specific view of the data utilized by an end user conceptual schema - Answer-This describes all the entities, attributes, and relationships together with integrity constraints. Each DB has exactly one. internal schema - Answer-A complete description of the internal model, down to the physical storage of data. Each DB has exactly one. logical data independence - Answer-The immunity of the external schemas to changes in the concept...

What is a Web app in Outsystems? - Application with a responsive interface that runs in the browser An Web app can run offline? - No, it requires internet. An Web app cannot access the camera of a smartphone, since it's not a mobile app. (True or False) - False, it can acesses all HTML5 supported device capabilities, like camera and localization. Do I need to install a web app? - All you need is a browser and the URL of the app How does an APP Web in Outsystems promote reusability? - One c...

CAOHC Exam Prep Questions with 100% correct Answers Latest Updated (Solved) hertz is a unit of: - answers-sound frequency decibel is a unit of: - answers-sound intensity the frequency of sound is perceived as: - answers-pitch what is the first thing you should do when fitting earplugs? - answers-a. pull the top of the ear to align the ear canal b. roll the earplug down into a tight, crease-free cylinder c. CHECK THE EAR CANAL FOR ANY OCCLUSIONS d. insert the earplug deep into the ear c...

IT2 STUDY ADVANCEMENT EXAM | 734 Questions and Answers (100%Verified Answers) 2024/2025. Which type of network are the workstations basewide as in one command connected to another command or one base connected to another base? (Page 1-1) Correct Answer: Metropolitan Area Network (MAN) During the pinging process what is the ping that is sent out called? (Page 1-6) Correct Answer: Echo message Which names are reserved by DOS to reserve the first serial and parallel ports, respectively? (Pag...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM ACTUAL EXAM 2 LATEST VERSIONS 300 QUESTIONS AND CORRECT ANSWERS ASSURED A+. VERSION 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 ...