This is due on the final day in class prior to the final exam. Questions 1. What is a database? Describe the 3 main types discussed in the book. * Is a collection of related data. * Doesn’t have to be electronic; example : card catalog’s in libraries ; spiral notebook ; phone or address book * Usually mean electronic database that run on computers 2. Why is the relational database model most commonly used today? What impact does it have on data integrity? * The idea came
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What is Access? Simple databases store information in only one table. These simple databases are often called flat file databases, or just flat databases. More complex database programs, such as Access, store information in multiple related tables, thereby creating what are referred to as relational databases. If the information in a relational database is organized correctly, you can treat these multiple tables as a single storage area and pull information electronically from different tables in
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A relational database is a collection of relations or tables. The rows of a table in a relational database are known as tuples and each column of a table is called an attribute. By definition, a relation becomes a set of tuples having the same attributes. Operations, which can be performed on the relations are select, project and join. The join operation combines the relations. The select queries are used for data retrieval, and the project operation identifies attributes. The information of the
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1 Introduction to Databases LESSON 1 Database Learning Objectives: On completion of Lesson 1, you should have been able to: 1. Describe the role of a database system 2. Briefly describe the evolution of database systems and the limitations of conventional file processing systems 3. Describe the three schema architecture for database and explain the difference between conceptual , external and physical schemas 4. Define the functions of a database administrator Keywords and Phrases LEARNER
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biggest advantages of the relational model of database design is that its foundation is formal mathematical theory. It allows its concepts to be defined and examined with great precision. In other systems, the calculations may need to be done separately prior to using the database. 2. Summarize in your own words the purpose of an E-R model specific to ACME Global Consulting. The E-R model can provide ACME Global with a specific, but open-ended design that is tailored to the company’s needs. This
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University of Phoenix Material Database Environment, Development Process, and Staffing Tables Part I Database Environment Table Describe each component of the database environment, and provide a common vendor-supplied example or an example of how this component relates to the rest of the database environment. |Components |Description |Example | |Database Management |The Computer Software application
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Q2: How are database application systems developed? A database application system consists of a database, a DBMS, and one or more database applications. A database application consists of forms, reports, queries, and possibly application programs. A database application system encompasses one or more application programs and works at a more macro level; application programs, on the other hand, focus on smaller components and work on smaller pieces of data management. The major steps in developing
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terms: data, database, DBMS, database system, database catalog, program-data independence, user view, DBA, end user, canned transaction, deductive database system, persistent object, meta-data, and transaction-processing application. • Data – known facts that can be recorded and that have implicit meaning. • Database – a collection of related data with an implicit meaning. • DBMS – a collection of programs that enables users to create and maintain a database • Database system –
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Advantages of a Relational database Relational databases are the standard when creating industrial standard efficient and scalable databases. They are based on a structure of tables which are logically connected to each other and can be queried in complex way to extract relevant and meaningful information. The querying of a relational database is done using a high level language called SQL which stands for structured query language. SQL is very easy to understand and unlike traditional programming
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IS 337 Midterm Exam for Database Applications To Buy this Class Copy & paste below link in your Brower http://homeworkregency.com/downloads/is-337-midterm-exam-for-database-applications/ Or Visit Our Website Visit : http://www.homeworkregency.com Email Us : homeworkregency@gmail.com IS 337 Midterm Exam for Database Applications The ____ operator selects records that match at least one of two or more conditions in a query The ____ data type can store field values containing up to
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