previous pregnancy. She delivered her living children preterm‚ one at 35 weeks gestation and the other at 34 2/7 weeks gestation‚ both vaginally. She completed steroid treatment to improve baby’s lungs at last hospitalization. She denies any significant health issues or previous surgeries. She states she is healthy with the exception of an incompetent cervix. Childhood Diseases: MD reports having chicken pox around at 5. She reports having an occasional cold as a child with no memory of any serious illness
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7) Patient allergy information is an example of an asset with a moderate requirement for integrity. 8) The more critical a component or service‚ the higher the level of availability required. 9) Data origin authentication provides protection against the duplication or modification of data units. 10) The emphasis in dealing with
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t) Operation of individual media 8) 5 Features u) Support diff. multimedia data type v) Handle large no. multimedia obj. w) Hierarchical storage structure & archiving data x) Information-retrieval y) Database capabilities MULTIMEDIA DATA 1. Multimedia data size [Size of media data makes storage‚ processing‚ transmission and reception of the data very costly] a. Multimedia data acquisition * Data
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Arizona State University W. P. Carey School of Business CIS 360 The NorthWind Database Tutorial PART 3 – Subqueries & Joins In this lesson of the NorthWind SQL tutorial‚ you will learn... 1. To write queries with subqueries. 2. To select columns from multiple tables with joins. 3. To select records from multiple tables with unions. Subqueries Subqueries are queries embedded in queries. They are used to retrieve data from one table based on data in another table. They generally are used when tables
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Using a database management system (DBMS) is a wise decision for any business that plans to implement the use of a database as part of their IT infrastructure. A database management system‚ also referred to as a database manager (Rouse‚ 2005)‚ allows one or many computers to create‚ query‚ and manipulate data in the database (Rouse‚ 2005). The database management system also manages request from users and applications‚ making the database much more user friendly‚ since the users nor the applications
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STELLA MARIS COLLEGE - DEPARTMENT OF COMPUTER SCIENCE DB34 - Database Management Systems UNIT I : Advantages and Components of a Database Management Systems - Feasibility Study - Class Diagrams - Data Types –Architecture- Events - Normal Forms - Integrity – EER model - Converting Class Diagrams to Normalized Tables - Data Dictionary. UNIT II : Query Basics - Computation Using Queries - Subtotals and GROUP BY Command - Queries with Multiple Tables - Subqueries - Joins - DDL & DML - Testing
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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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www.Vidyarthiplus.com VIDYARTHIPLUS - ANNA UNIVERSITY ONLINE STUDENTS COMMUNITY III SEMESTER - B.E – COMPUTER SCIENCE AND ENGINEERING QUESTION BANK - CS6302 DATABASE MANAGEMENT SYSTEMS UNIT I 1. What are the disadvantages of file processing system? 2. Explain the basic structure of a relational database with an example. 3. What do you mean by weak entity set? 4. Give example for one to one and one to many relationships. 5. What is the need of normalization? 6. Write a note on functional dependencies
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Advantages of Database Management Systems Database Management System (DBMS) aids in storage‚ control‚ manipulation and retrieval of data. This article lists the advantages of database management systems. Database is a software program‚ used to store‚ delete‚ update and retrieve data. A database can be limited to a single desktop computer or can be stored in large server machines‚ like the IBM Mainframe. There are various database management systems available in the market. Some of them are Sybase
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sorts of people need access to companies’ databases. In addition to a company’s own employees‚ these include the company’s customers‚ potential customers‚ suppliers‚ and vendors of all types. It is possible for a company to have all of its databases concentrated at one mainframe computer site with worldwide access to this site provided by telecommunications networks‚ including the Internet. Although the management of such a centralized system and its databases can be controlled in a well-contained manner
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