------------------------------------------------- Course Objectives tested in this Exam are: * ------------------------------------------------- Understand normalization concepts and data structures * ------------------------------------------------- Complete physical database design * ------------------------------------------------- Perform database query processing using SQL * ------------------------------------------------- Understand multi-user and administration issues
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A database management system (DBMS) is a collection of programs that manages the database structure and controls access to the data stored in the database. In a sense‚ a database resembles a very well-organized electronic filing cabinet in which powerful software‚ known as a database management system‚ helps manage the cabinet’s contents. Advantages of the DBMS: The DBMS serves as the intermediary between the user and the database. The database structure itself is stored as a collection of files
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Database Management System (DBMS): It is a collection of interrelated data and set of programs to access the data. It contains information about a particular enterprise and also provides an environment that is both convenient and efficient to use. Database Applications: Banking: all transactions Airlines: reservations‚ schedules Universities: registration‚ grades Sales: customers‚ products‚ purchases Manufacturing: production‚ inventory‚ orders‚ supply chain Human resources: employee
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Essay Questions Communication is an important process of transferring information. The most important components of communication are: the sender‚ the receiver‚ a message and the feedback. First the sender who is the person or entity that is sending a message with information. The receiver gets the message from the sender. After receiving the message‚ he tries to encode the message and prepares a proper answer which is called‚ the feedback. Communication is an essential part of this modern world;
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The importance of high quality software Software development is a vital activity in modern American society‚ and is likely to have increasing significance in the future. Software manages our bank accounts‚ pays our salaries‚ controls the aircraft we fly in‚ regulates power generation and distribution‚ controls our communications‚ etc. Characteristics of high quality software High quality software shares the following obvious attributes: high quality software is intuitive and easy to use -- the
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Hardware and Software Hardware: physical components that make up a computer system (keyboard‚ mouse) Software: programs that control the computer system with 2 types Systems software: allow the hardware to run properly Applications software: allow the user to do specific tasks Components of Computer Systems A computer is made up of hardware and software with: Input devices (inputting the data into the computer)- keyboard‚ mouse Output devices (data output from a computer)- monitor‚ printer
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AC14/AT11 Database Management Systems TYPICAL QUESTIONS & ANSWERS PART -I OBJECTIVE TYPE QUESTIONS Each Question carries 2 marks. Choosethe correct or the best alternative in the following: Q.1 Which of the following relational algebra operations do not require the participating tables to be union-compatible? (A) Union (B) Intersection (C) Difference (D) Join Ans: (D) Q.2 Which of the following is not a property of transactions? (A) Atomicity (B) Concurrency (C) Isolation
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Axia College Material Appendix E Hardware/Software Components In your own words‚ describe the following hardware/software components |Legacy systems |Legacy systems are the hardware and software systems that a company already uses. They| | |are a huge investment and can be customized to meet a company’s exact needs. | |Mainframe computers |Mainframe computers are the core of a company’s
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Throughout this article‚ Foster’s five components of a quest make up the points of a story and bring it together as a whole. These five components are: (a) a quester‚ (b) a place to go‚ (c) a stated reason to go there‚ (d) challenges and trials en route‚ and (e) a real reason to go there. An example of a movie that exploits these components is the drama/romance Collateral Beauty. In this movie‚ the questers name is Howard‚ played by Will Smith. The place to go isn’t a literal place‚ but more of
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word here is manage management implies the controlled use of a resource‚ that is controlling its quality coordinating shared use‚ of a resource‚ that is‚ controlling its quality‚ coordinating shared use and controlling access to authorized users. A DBMS has many uses: - it enables users to access and manipulate the database. - it provides a building block in constructing data processing systems for applications requiring database access – MIS or systems for accounting‚ production and inventory
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