Databases | Database Construction and Management 1. What is a database? A database is one or more large structured sets of persistent data‚ usually associated with software (database management system) to update and query the data. A simple database might be a single file containing many records‚ each of which contains the same set of fields where each field is a certain fixed width - From FOLDOC A database is a collection of data elements (facts) stored in a computer in a systematic way
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Specialized Database Presentation Specialized Database Presentation Team B: Chappell Grant‚ John Hainline Linda Hannigan DBM/384 Special Purpose Databases Brando Sumayao Specialized Database Presentation • • • • • • • • • • Executive Overview Strategic Goal Proposal Comparison of different database and purposes SQL concepts relative to spatial and temporal databases Uses of databases in the business environment Description of the information retrieval process in relations to the specialized
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Files and Relational Databases What is a file? • contains groups of records used to provide information for operations‚ planning‚ management and decision making. • can be used for storing data for an indefinite period of time‚ or they can be used to store data temporarily for a specific purpose. FILE TYPES • Master Files -- contain records for a group of entities. The attributes may be updated often‚ but the records themselves are relatively permanent. These files
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Database Development Process 1. Define business processes Many database development efforts begin by defining the key business and/or operational processes within the organization Developers first create high-level models showing the major activity steps associated with marketing‚ sales‚ production‚ human resource management‚ public relations‚ research and development‚ and so on Taken together‚ these process maps represent an enterprise-wide model of the organization and its core 2. Determine
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maintains a database of over 43 million households with Blockbuster memberships all used to help customers select movies. Blockbuster origins date back to 1985‚ when the first Blockbuster store was open in Dallas. Currently Blockbuster is a world-class company operating with thousands of locations and billions of dollars in revenue. Throughout this paper‚ the database management of Blockbuster will be explained – from customer database‚ to marketing database. Blockbuster Database Management
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Distributed Database Management Systems Rajat sharan errajatsharan@gmail.com Abstract: The dream of computing power as readily available as the electricity in a wall socket is coming closer to reality with the arrival of grid and cloud computing. At the same time‚ databases grow to sizes beyond what can be efficiently managed by single server systems. There is a need for efficient distributed database management systems (DBMSs). Current distributed DBMSs are not built to scale to more
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Abstract Database Systems has a practical‚ hands-on approach that makes it uniquely suited to providing a strong foundation in good database design practice. Database design is more art than science. While it’s true that a properly designed database should follow the normal forms and the relational model‚ you still have to come up with a design that reflects the business you are trying to model. This paper shows describes design process of database project. The importance of Completing the Design
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Comparing and Contrasting the Relational Database Model and OO Model The relational database model is based upon tables or relations. In this model‚ the physical implementation of the database is abstracted away from the user. Users query the database using a high-level query language‚ such as SQL. The relations are made up of columns‚ which have headings indicating the attribute represented by that column. Tables have key fields‚ which can be used to identify unique records. Keys relate tables
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1) A requirement is something a database needs to do in order to fulfill its purpose. True 2) You only need to include the most important stakeholders in the database discussions. False 3) Forms are used for gathering input. True 4) A transaction database is optimized to track transactions in real time. True 5) Data mining uses business intelligence tools and techniques on a variety of data sources brought together in a data warehouses. true 6) The domain
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August 4‚ 2009 What is Database Normalization? Database Normalization is a systematic way of ensuring that a database structure is suitable for general – purpose quering and normalization is the process of efficently organizing data in a database. This process was first introduced in 1970 by E.F. Codd and has since been redefined to higher normal forms. The two goals of the normalization process are: eliminating redundant data and ensuring that data dependencies make sense. These goals reduce
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