Normalization of Database Tables Database Tables and Normalization * Normalization is a process for assigning attributes to entities. It reduces data redundancies and helps eliminate the data anomalies. * Normalization works through a series of stages called normal forms: * First normal form (1NF) * Second normal form (2NF) * Third normal form (3NF) * Fourth normal form (4NF) * The highest level of normalization is not always desirable. * The Need
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STUDENT DATABASE MANAGEMENT SYSTEM A SWDLC is an abstract representation of gradual development and evolution of the software that undergoes a series of sequential or concurrent steps of the software development process .each of these steps results in the development of a s/w project which may be either a minor or major component of the s/w system in contribution to the completion of the system. Each step requires some input and produces some form of output which further becomes the input of the
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earth is the only planet in the universe which has an environment suitable for life. Water‚ land‚ and air are needed for survival. Earth provided these essential and human used them. One of the biggest problems that the enviroment is serious pollution. Pollution can be divided into three types : water pollution‚ land pollution‚ and air pollution. Paragraph 3: Another type of pollution is which has a remarkable influence on over environment is air pollution. Every year‚ there are a lot of smoke
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Both the governmental and Non Governmental Organizations have been propagating afforestation programmes. Due to the industrial revolution many countries have seen the rapid decline in forests. Cutting of trees is not only a threat to the environment but also to the quality of life and to the economy also. Reasons for the decline in forests : Explosion of human and livestock population Increased demand of timer‚ and fuel wood Expansion of the agricultural land Construction of the infrastructure
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June 2012 Database Security and Encryption: A Survey Study Iqra Basharat Farooque Azam National University of Sciences and Technology (NUST)‚ H-12‚ Islamabad‚ Pakistan National University of Sciences and Technology (NUST)‚ H-12‚ Islamabad‚ Pakistan ABSTRACT Security in today’s world is one of the important challenges that people are facing all over the world in every aspect of their lives. Similarly security in electronic world has a great significance. In this paper‚ we survey
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Topic#6: Relational Database Operators 6.1 Significance of Relational Operators • Relational database supports basic database operations in order to provide useful means for retrieving or manipulating data in tables. • Because the relational model has its mathematical basis upon the relational theory (by thinking tables as sets or relations)‚ the supported database operators conform to existing operators in relational algebra. • In fact‚ a relational database software implementation
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activities. The ultimate goal of the database is to improve patient safety and quality of care (npdb.com). The creation of database compels malpractice insurers‚ licensing agencies‚ HMOs‚ hospitals and group practices to report malpractice payments and any adverse action affecting medical professionals. The database is achieving its purpose as the 2011 annual report showed that medical malpractice payments declining steadily from 2002 to 2011. The database also makes it easier for authorized agencies
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There are four different types of database-system users‚ differentiated by the way they expect to interact with the system. Different types of user interfaces have been designed for the different types of users. Naive users are unsophisticated users who interact with the system by invoking one of the application programs that have been written previously. For example‚ a bank teller who needs to transfer $50 from account A to account B invokes a program called transfer. This program asks the
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------------------------------------------------- GeRard ryan relational database assignment ------------------------------------------------- GeRard ryan relational database assignment T T N N E E R R U U Contents Introduction - 2 - Description of Assignment - 2 - Problems & Solutions - 4 - Normalisation - 5 - Data dictionary - 0 - Relationships between each Table - 5 - Database Tables - 6 - Introduction Description of Assignment The company I have decided
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Similarly‚selling of milk‚first in glass bottles‚then in packets ‚then tetra packs and vending machines is all to reduce costs or improve their goodwill by innovating the mode of packaging. Tetra pack keeps the milk safe for months and is made of paper and can be recycled. Plastic packets incur lesser costs and vending machines in itself have no packaging cost. So‚companies use new and unique mode of packaging to ‚one‚reduce their costs‚two‚to promote the product. Deterioration * After wooden
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