SYSTEMS DEVELOPMENT AND DECISION MAKING PPP3-6.pptx

Clustering classifies events or entities when no

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Clustering - classifies events or entities when no known group exists for the data. Forecasting - analyzes a series of data in order to predict or forecast variables. Sequences - events that take place in a specific order
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DATA RESOURCE MANAGEMENT UNIT 4 MODULE 5: MANAGING DATA
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DATABASE MANAGEMENT TOOLS Functions of DBMS: Data dictionary : describes and manages the data categories and structures that dictate how the database is organized. DBMS can input, modification, and retrieval of data. Data management: the creation, update, and deletion of the data within the database. Data retrieval: using queries, data is retrieved and combined. Data administration: including maintaining data integrity: recovering corrupted information, and managing users and group access to the data. DBMS is the component of the database that provides the tools to help decision making process. To use DBMS a search through query is required in order to gain access but, only with personnel who are authorized to access this information. DBMS can gather various department data and connect the various data through analysis that will help management make better decisions.
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DATABASE MANAGEMENT TOOLS DBMS, multiple sets of information can be organized into a single record with ties to other managed information in the same database. Access is granted to authorized user or group access to enforce only read access, only write access, or read/write access. Business intelligence – is a collaboration that consist of technology and strategies to help business analyze, organize, control access to information that enables management and executives to make better informed decisions. Data warehouse – contains current and historical data from various sources from various entities that are either external or within the organization. Data mart – a subset of data warehouse that focuses on unique data for that specific line of business or team. Hadoop – a Java based programming software that collects large amounts of data, processing, and analytics.
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DATABASE MANAGEMENT TOOLS In memory computing – storage of data in the RAM located on the server which allows computers to process large amount of information very quickly. Analytical platforms – system is built on user specification and large amount of data is collected extremely fast. Managing Data Resources Using DBMS assures data integrity. According to the CIA triad “the data needs to be available to all users that the data owners deem necessary, kept confidential from those who don’t need access to the data, and its integrity kept safe from unauthorized changes.”. Data integrity is ensuring that information is not accessed by those unauthorized to access the information. To prevent data integrity: Only authorized users are allowed to manipulate or delete data to ensure data integrity is maintained.
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CONTINUED Enforcing specific formatting rules Requiring certain items to fit a format, can help uphold data consistency and integrity Maintaining explicit access control policies Allowing only specific employees to enter data and only their superior void or approve certain
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