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A database administrator (DBA) manages computer databases. [1] The role may include capacity planning , installation , configuration , database design , migration , performance monitoring, security , troubleshooting , as well as backup and data recovery .
[21] [22] The need for data cleaning will arise from problems in the way that the datum are entered and stored. [21] Data cleaning is the process of preventing and correcting these errors. Common tasks include record matching, identifying inaccuracy of data, overall quality of existing data, deduplication, and column segmentation. [ 23 ]
The database design documented in these schemas is converted through a Data Definition Language, which can then be used to generate a database. A fully attributed data model contains detailed attributes (descriptions) for every entity within it. The term "database design" can describe many different parts of the design of an overall database ...
Formally, a "database" refers to a set of related data accessed through the use of a "database management system" (DBMS), which is an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database (although restrictions may exist that limit access to particular data).
Over 400,000 teacher-reviewed classroom resources including lesson plans, worksheets, educational videos, and education articles. Free Abstract; Subscription full-text Lesson Planet [91] LexisNexis: Law (general) Electronic database for legal and public-records related information Subscription Reed Elsevier [92] Lingbuzz: Linguistics
Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms.
If AOL Desktop Gold is running slowly, try the solutions listed below. After trying a solution, please see if the problem with your Desktop Gold is fixed. If it's not, please continue to the next solution until the problem is fixed. Exit and restart Desktop Gold • If the issue still exists, proceed to the next step.
Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results.