DataBase Concepts DataBase – a collection of information related to specific entity (e.g. organization‚ bank‚ college‚ library etc.) DBMS – (Database management system) – a application through which we can control the database i.e. we can store data into database‚ update the data and delete also we can retrieve the data from database. For doing these operation DBMS support a language called Structured Query language (SQL). SQL accomplishes many powerful tasks with a mere seven statements: SELECT
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privileges on that given relation. 2) How is the view mechanism used as an authorization mechanism? Ans: A multiuser database system must selectively permit users to share data‚ while retaining the ability to restrict data access. There must be a mechanism to provide protection and security‚ permitting information to be accessed only by properly authorized users. Further‚ when tables or restricted views of tables are created and destroyed dynamically‚ the granting‚ authentication‚ and revocation
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have been created‚ one of this discovery is the computer. The technology has changed the different phase of our lives. Nowadays‚ with the help of computer‚ the use of robots and AI (Artificial Intelligence) inclined the field of industry and causes economy and education more spare time. Computer promotes our way of living in upgrade‚ an ease to almost everything. In recent years‚ the increased flexibility and user-friendliness of computer databases make these systems a crucial business component
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ch_01_4260.qxd 4/22/04 9:27 AM Page 1 1 Creating a Payroll System Introduction This chapter* provides an overview of how the payroll process typically functions‚ using a payroll supplier‚ an in-house payroll process assisted by computer systems‚ or an in-house system that is entirely processed by hand. These descriptions also include flowcharts of each process and coverage of the exact controls that are most useful for each situation. Additionally‚ the chapter covers the types of
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Concurrency Control in Distributed Database Systems PHILIP A. BERNSTEIN AND NATHAN GOODMAN Computer Corporation of America‚ Cambridge‚ Massachusetts 02139 In this paper we survey‚ consolidate‚ and present the state of the art in distributed database concurrency control. The heart of our analysts is a decomposition of the concurrency control problem into two major subproblems: read-write and write-write synchronization. We describe a series of synchromzation techniques for solving each subproblem
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become a problem on the side of the management because more time and effort is required. The foregoing situation has prompted the proponents to convert their business transaction specifically on booking and reservation system to an automated and computerized based. Booking and Reservation System of Kode Inn is the proposed project. The proposed system project is capable of making Kode Inn’s operation easy‚ convenient‚ efficient‚ and organized. This can help the business in making its processes and
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United States take some or all of their classes online right now. On the other hand‚ approximately 15 million students take all of their classes in a physical classroom. (Adkins) What do these number say about an online education? Well‚ they mean that there are both positive aspects and negative aspects to taking online courses. It turns out that there are many examples of both positive and negative reasons to enroll in or to not to enroll in an online class. Firstly‚ there are many advantages or
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Scope & Delimitations The proposed Computerized Student Record Keeping will enable the registrar to organize and to keep the necessary information of the student in a much easier way. This system will provide the necessary records of the students including their past and previous grades‚ their subjects that they take up and the subjects that they will going to take up. This system is also enabling to provide the student record when the student needs it immediately or if the record like grades
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EE4791 Database Systems 2012-13 Project (CA‚ 20%) Design and Implementation of the Database with Microsoft Access. Group assignment (1-3 persons per group): 1. Propose a database Case Study with at least 5 tables. Write down the requirements on the database. 2. Draw EER diagram. 3. Give relational model (i.e.‚ logical scheme). Normalize up to 3NF. 4. Create the tables in MS Access in Design View. Choose indexes for your query. Implement data integrity (default value‚ range values‚ etc) 5. Implement
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allowing students to use laptop computers to perform academic assignments in the classroom environment negatively affects their in-class performance more so than it benefits. These individuals will say that laptops distract a bulk number of students and will draw their attention away from the instructors. Others will say that allowing students to use laptops in the classroom engages and assists them while supplying equal access to technology‚ as well as help cultivate computer skills that will be useful
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