Chapter 3 homework.doc - Marianne Hassman ITM 5000 Homework Chapter 3 Questions 2,3,4,5 and 8 2 What is online transaction processing Online transaction

Chapter 3 homework.doc - Marianne Hassman ITM 5000 Homework...

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Marianne Hassman ITM 5000 Homework Chapter 3 Questions 2,3,4,5 and 8 2. What is online transaction processing? Online transaction processing is the gathering of input information, processing that information, and updating existing information to reflect the gathered and –processed information. 3. What is online analytical processing? Online analytical processing is the manipulation of information to support decision making. 4. What is the most popular database model? The relational database model is the most popular. It is composed of two parts: the information stored in a series of two dimensional tables, files, or relations and the logical structure of that information. 5. How are primary and foreign keys different? A primary key is a field that uniquely describes each record. A foreign key is a primary key of one file that appears in another file. Foreign keys are essential in the relational database model. Without them you have no way of creating logical ties among the various files.
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  • Winter '14
  • DrHair
  • Databases, Relational model, Online transaction processing

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