In all information systems‚ data resources must be organized and structured in some logical manner‚ so that they can be: D. All of the choices are correct. From a logical point of view‚ a(n) _______________ is the smallest data element that can be observed and manipulated. A. character A record represents a collection of _______________ that describe an entity. D. attributes All the fields used to describe the attributes of an entity are grouped to form a(n) _______________
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The Evolution of Data Models The quest for better data management has led to different models that attempt to resolve the file system’s critical shortcomings. Because each data model evolved from its predecessors‚ it is essential to examine the major data models in roughly chronological order. 1.1 The Hierarchical Model A Hierarchical Database Model is a data model in which the data is organized into a tree-like structure. The structure allows representing information using parent/child relationships:
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com/pub/a/2001/10/24/follow-yr-nose.html Obasanjo‚ D Pardede‚ E. (2009) Open and Novel Issues in XML Database Applications:Future Directions and Advanced Technologies. Published by IGI Global. Chapter 1 and 2. Prohorenko‚ Prokhorenko. (2005) XML as a Bridge between SQL and Web Applications. Published on BEA Dev2Dev. Retrieved from: http://www.oracle.com/technetwork/articles/entarch/xml-bridge-093515.html Trinidad‚ G Trippe‚ Waldt (2008). Using XML and Databases: W3C Standards in Practice. White Paper sponsored by
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13 INTRODUCTION TO QUERY OPTIMIZATION This very remarkable man Commends a most practical plan: You can do what you want If you don’t think you can’t‚ So don’t think you can’t if you can. —Charles Inge Consider a simple selection query asking for all reservations made by sailor Joe. As we saw in the previous chapter‚ there are many ways to evaluate even this simple query‚ each of which is superior in certain situations‚ and the DBMS must consider these alternatives and choose the one with
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CLINIC MANAGEMENT SYSTEM NOORUL HUDA BINTI NOORLY This report is submitted in partial fulfillment of the requirements for the Bachelor of Computer Science (Database Management) FACULTY OF N ORMATION AND COMMUNICATION TECHNOLOGY UNIVERSITI TEKNIKAL MALAYSIA MELAKA 2007 ABSTRACT Clinic Management System for UTeM is a system that can help the clinic to manage their daily activity. This system help reduce the problems occur when using the manual system. This system enables doctors
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CHAPTER 4 RELATIONAL DATABASES SUGGESTED ANSWERS TO DISCUSSION QUESTIONS 4.1 Contrast the logical and the physical view of data and discuss why separate views are necessary in database applications. Describe which perspective is most useful for each of the following employees: a programmer‚ a manager‚ and an internal auditor. How will understanding logical data structures assist you when designing and using database systems?</para></question><question
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Restaurant Billing Sytsem is a system that computes the total sales of the restaurant‚ the profit they earn each day and the negative and positive computation of sales versus the target sales.The system would focus mainly on the development of the restaurant billing system for Mcdonald’s Lipa Ayala itself. It would include the systems database wherein the computation of sales would be kept in a way that only authorized personnel can access. The system can also produce report of sales whenever it
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Assignment of DBMS Topic: Describing & Storing Data In DBMS (Traditional Models) Introduction A computer database relies upon software to organize the storage of data. This software is known as a database management system (DBMS). Database management systems are categorized according to the database model that they support. The model tends to determine the query languages that are available to
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Why good database design is important in performing data operation? A good design is significant in performing data operation. Without the good design‚ it is difficult to make relationship with other database and it will not run competently and also securely (Knight‚ 2011). This report will discuss the important of good database design‚ which are crucial for the business in performing operation and making a decision. Firstly‚ with the good design‚ data will be stored in consistent form. Appropriately
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1. Answer C is correct. RAID 1 (disk mirroring) needs two disks to be implemented.Before you can enable RAID 1 using Windows Server 2008‚ you need to convert basicdisks to dynamic disks‚ which converts the partitions into volumes. Answers A and Bare incorrect because write catching improves disk performance but does not helpimplement RAID 1. Answer D is incorrect because to implement RAID 1 usingWindows Server 2008‚ you must use dynamic disks. 2. Answer B is correct. RAID 1‚ disk mirroring
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