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(a) Identify the main entity types of the company.
(b) Identify the main relationship types between the entity types and determine the multiplicity constraints for each relationship
(c) Identify attributes and associate them with entity or relationship types.
(d) Determine candidate and primary key attributes for each (strong) entity type.
(e) Using your answers (a) to (d) create a single ER diagram. State any assumptions necessary to support your design.
Explain the functions of data manager? Functions of Data Manager : - Convert operations in user's queries coming directly through query processor or indirectly in an applicatio
Write a Query that uses the UNION Operator 1. Use the Software Experts database to: a. Display the first and the last name of all consultants who worked on any projects f
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What is a PROJECT operation? The project operation is a unary operation that returns its argument relation with particular attributes left out. Projection is shown by pie (π).
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
Define the terms i) Key attribute ii) Value set Key attribute: An entity type usually has an attribute whose values are exact from each individual entity in the collection. Su
Question: This form represents one of a number used for each sailing of a range of boats. A passenger may go on many sailings and will have the same passenger number for each.
A file manipulation command that extracts some of the records from a file is called ? A file manipulation command that extracts some of the records from a file is called SELECT
how to connect vb.net with access
Consider student (std_id, std_name, date_of_birth, phone, dept_name). Put the data for a student with student id200, name arun, birth date 1 February, 1985, phone number (01110 328
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