Designing Databases: Building a Conceptual Data Model [1] Fundamentals of Databases Alvaro A A Fernandes School of Computer Science University of Manchester Acknowledgements 2 These slides are minor adaptaAons of material authored and made available to instructors by Ramez Elmasri
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have? Ans: An "owner" account is given to those in control of specific relations. They have select‚ modification‚ and reference 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
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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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command? Selected Answer: SELECT HireDate‚ COUNT(*) FROM EMPLOYEE WHERE Salary < 30000; Question 9 5 of 5 points Because SQL stored procedures allow and encourage code sharing among developers‚ stored procedures give database application developers the advantages of less work‚ standardized processing‚ and specialization among developers. Selected Answer: True Question 10 5 of 5 points The SQL command used to create a virtual table is ________.
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an introduction to database architecture and relational databases. The introduction covers the basic concepts of database design and management‚ focusing on the steps that a database designer should follow when creating a database for use with an application‚ addressing the basic tasks encountered by a database administrator‚ and identifying and discussing some of the aspects of ongoing database management. In Week One‚ you are introduced to a variety of different database architecture types
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then in every branch problem were arise because of increasing of paper works and the communication between offices is poor. Erika Dela Cruz feels if she didn’t do anything to prevent the problem‚ too mistake were being made so she decided to take a database application to help solve the problem. FurniPointe is specialized in property management‚ by taking intermediate role between owners who wish to rent out their furnished property and clients who wanted the furnished property for a fixed period
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DATABASE A database is a collection of data organized to meet users’ needs. Why This Matters Without data and the ability to process it‚ an organization would not be able to successfully engage in business activities‚ nor would it be able to generate reports to support knowledgeable workers and decision makers which in turn help’s to achieve organizational goals; it would not be able to pay employees‚ send out bills‚ and order new inventory. Databases have made it possible to map the structure
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LP1_William_Norris Chapter 1 Practice question # 10 a) Advantages of a database over the instructor’s current system would be; organization of data into one location rather than across several spreadsheets‚ and ease and speed regarding both data storage and retrieval. b) Major topics of the database include; students‚ dates attended‚ assignment and test scores‚ and overall grades. c) A statement of work for this database may look like the following; History: Historically‚ student data has
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ways in which database technologies could be used by an office stationery supply company to achieve low-cost leadership. Answer: Sales databases could be used to make the supply chain more efficient and minimize warehousing and transportation costs. You can also use sales databases‚ as well as text mining and sentiment analysis‚ to determine what supplies are in demand by which customers and whether needs are different in different geographical areas. Business intelligence databases could be used
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Database management Homework 1 Chapter 1. Getting started A. Create a simple list of owners and properties. B. Describe modification problems. There are three problems. First is deletion problem‚ second is update problem‚ third is insertion problem. Deletion problem is when you want to delete data‚ you may lost too much data. Update problem is when you want to update data‚ the sheet may have inconsistent data. Last insertion problem is when you want to insert some data‚ you must
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