reference: http://www.tutorialspoint.com/sql important: constrains: SQL constraints are used to specify rules for the data in a table. If there is any violation between the constraint and the data action‚ the action is aborted by the constraint. In SQL‚ we have the following constraints: NOT NULL - Indicates that a column cannot store NULL value UNIQUE - Ensures that each rows for a column must have a unique value PRIMARY KEY - A combination of a NOT NULL and UNIQUE. Ensures that
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SQL Assignment A. Single Table Queries 1. Compose a query to list the number of customers in each state. In the result table‚ your query should show state and the number of customers in each state. Sort the results by state in ascending order. 2. For each product that had been ordered‚ we would like to know the total quantity that had been requested. List the most popular product first and the least popular product last. In the result table‚ show the product ID and the total quantity that had
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POS or PoS is an abbreviation for Point of Sale (or Point-of-Sale‚ or Point of Service). The term is applicable to a retail shop or store‚ the checkout/cashier counter in the store‚ or a location where such transactions can occur in this type of environment. It can also apply to the actual Point of Sale (POS) Hardware & Software including but not limited to : electronic cash register systems‚ touch-screen display‚ barcode scanners‚ receipt printers‚ scales and pole displays. Point of Sale Systems
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convenient. They will have you enjoying your food just as fast as you can pay the cashier. On the other hand‚ though it is not fine dining but that could be your second choice. You could go to one of the finer restaurants such as The Washington Inn. Here‚ service is everything‚ speed is not. A relaxing evening is all that awaits you. So would you rather have a diet coke or a nice glass of say‚ White Zinfandel. The choice is yours. Eating out at a fine dining restaurant is not just a decision‚ but
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Course: INB 410 Assignment: INTRODUCTION China is situated in eastern Asia on the western shore of the Pacific Ocean‚ with an area of 9.6 million square kilometers. China’s continental coastline extends for about 18‚000 kilometers‚ and its vast sea surface is studded with more than 5‚000 islands‚ of which Taiwan and Hainan are the largest. Since initiating market reforms in 1978‚ China has shifted from a centrally
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SQL Queries I. Give a database schema for a library management system as the following picture. [pic] 1. How many copies of the book titled Database Fundamentals” are owned by the library branch whose name is "University of Delhi"? 2. How many copies of the book titled The Lost Tribe are owned by each library branch? 3. Retrieve the names of all borrowers who do not have any books checked out. 4. For each book that is loaned out from the " University of Delhi " branch
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Chapter 3: Table Normalization and Windows Azure SQL Database Review Questions 1. What are the conditions for a table to be a relation? Each cell in a table must contain a single value‚ there should be no duplicated rows‚ and all the cells in a column must contain the same type of data 2. How do you link a table to another table? Link tables based on a relationship connecting the entities with common column in each table 3. What is functional dependency? Give an example of functional dependency
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HISTORY OF DATABASE MANAGEMENT SYSTEM With the progress in technology in the areas of processors‚ computer memory‚ computer storage and computer networks‚ the sizes‚ capabilities‚ and performance of databases and their respective DBMSs have grown in orders of magnitudes. The development of database technology can be divided into three eras based on data model or structure: navigational‚ SQL/relational‚ and post-relational. The two main early navigational data models were the hierarchical model
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Kudler Accounting System BSA/310 Kudler Accounting System * Kudler Fine Foods is an upscale specialty food store with three locations in the San Diego Metropolitan area. This initial business plan includes funds to acquire a comprehensive Retail Enterprise Management System (REMS). An analysis was completed and a modular and scalable RMS selected. This report will provide an overview of Key features‚ core technology‚ benefits and cost of the new Retail Enterprise Management System
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Download at www.eBook12.Com Download at www.eBook12.Com This page intentionally left blank Download at www.eBook12.Com Introduction to Database Management Mark L. Gillenson‚ Paulraj Ponniah‚ Alex Kriegel‚ Boris M. Trukhnov‚ Allen G. Taylor‚ and Gavin Powell with Frank Miller Download at www.eBook12.Com Credits PUBLISHER Anne Smith ACQUISITIONS EDITOR Lois Ann Freier MARKETING MANAGER Jennifer Slomack SENIOR EDITORIAL ASSISTANT Tiara Kelly PRODUCTION MANAGER Kelly Tavares PRODUCTION
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