Working and processing files, Database Management System

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Assignment Help:

1. Define each of the following IN YOUR OWN WORDS:

(a) File:

(b) Record:

(d) Primary Key:

(e) Secondary Key:

2. A travel agency wants to track the prices of its various packages. Package pricing differs by season (high and low). The input record should include package code, package description, vendor number, low season cost, low season dates (beginning and ending), high season cost, high season dates (beginning and ending), package markup percentage. Design the input record.

A View may be defined of as a virtual table, that is, a table that does not really exist in its own right but is instead inferred from one or more underlying base data table. T

Describe the Composite Key Composite Key: Sometimes one key is not enough to uniquely recognize a row. E.g. in a single class Roll is enough to search a student, but in the w

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Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName

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In this assignment, you will create a program that works with multiple tables. In this assignment, you will work with the factory and sales tables. 1. Create a new project nam

a set of possible data value of an attribute is called??

Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): Ans: The relational database schema f

What is property - properties of a database ? It is an integrated collection of logically related records. It consolidates separate files into a common pool of data records and

Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to

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