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What is candidate key?
Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.
DBMS, Programming
Data Mining Assignment - In this assignment you are asked to explore the use of neural networks for classification and numeric prediction. You are also asked to carry out a data mining investigation on a real-world data ...
The system development team at the XYZ Company is working on developing a new customer order entry system. In the process of designing the new system, the team has identified the following data entity attributes: Invento ...
Question : Talk about the importance of pulling data from worksheets into a single sheet also the ways excel could be a solution to a complex challenge. The response must be typed, single spaced, must be in times new rom ...
Suppose that we have a table of house prices and a table of zip codes: • hprices(hid (PK),address,bedrooms,price,zipcode) • zipcodes(zipcode (PK),state) Write a SQL query that finds the average, maximum, and minimum pric ...
IN SQL DEVELOPER Create a table UserPermissions (provide create and insert statements code) Document UserName Policy SYSTEM Menu JDOW W2 USAM Permissions SYSTEM W2 JDOW Form 1040 USAM Policy JDOW W2 SYSTEM Write a PL/SQL ...
A School's office of the registrar maintains data about the following entities: a) courses (including course number, title, credits, syllabus and prerequisites), b) course offerings (including course number, year, semest ...
Q1. Given the following file for assignment worker.com, identify data anomalies that must be removed before data can be loaded in data warehouse. Worker_assignment ← -----------------on course web site File is available ...
Solve the following questions using Oracle. You are not allowed to use the syntax of any DBMS other than Oracle. Make sure to upload an electronic copy of your solution to your CSC335 TRACE folder. Name the file hw4.sql. ...
We can represent a data set as a collection of object nodes and a collection of attribute nodes, where there is a link between each object and each attribute, and where the weight of that link is the value of the object ...
Question: 1. Unified Communications System (e.g., email, conferencing, and messaging) - The local area network is slower than needed, especially for newer, cloud-based applications. The email system needs refurbishment a ...
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