meaning of data dictionary
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data dictionary Share this item with your network: A data dictionary is a collection of descriptions of the data objects or items in a data model for the benefit of programmers and others who need to refer to them. A first step in analyzing a system of objects with which users interact is to identify each object and its relationship to other objects.
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- The Benefits of a Data Dictionary. A data dictionary promotes data integrity by supporting the adoption and use of consistent data elements and terminology within health IT systems. By adopting a data dictionary, organizations can improve the reliability, dependability, and trustworthiness of data use. A data dictionary promotes clearer understanding of data elements; helps users find information; promotes more efficient use and reuse of information; and promotes better data management.
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4 The Data Dictionary A data dictionary contains: The definitions of all schema objects in the database (tables, views, indexes, clusters, synonyms, sequences, procedures, functions, packages, triggers, and so on) How much space has been allocated for, and is currently used by, the schema objects. Default values for columns.
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data Definition of data. 1  1 : factual information (such as measurements or statistics) used as a basis for reasoning, discussion, or calculation the data is plentiful and easily available — H. A. Gleason, Jr. comprehensive data on economic growth have been published — N. H. Jacoby.
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data Definition of data for Students. 1 : facts about something that can be used in calculating, reasoning, or planning. 2 : information expressed as numbers for use especially in a computer Hint: Data can be used as a singular or a plural in writing and speaking. This data is useful. These data have been questioned.
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List of programming and computer science terms for 1–3, datums for 4, 5. 1. a single piece of information, as a fact, statistic, or code; an item of data. 2. Philosophy. any fact assumed to be a matter of direct observation. any proposition assumed or given, from which conclusions may be drawn.
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25 The data dictionary By highlighting already existing data elements, a data dictionary helps the analyst avoid data redundancy. If all programs using a given data element are cross-referenced in the data dictionary, assessing the ripple effects of a change in the data is simplified.
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Using a Data Dictionary A data dictionary is far superior because it can simply examine the tables as they are, examine the data dictionary, work out a diff, and execute the smallest set of commands to bring the database current. This approach does require of course that the data dictionary be in source control like any other application file.
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Metadata A description or definition of electronic data, or data about data. Often, metadata can only be assessed in certain viewing modes. Metadata can include descriptive HTML tags and information about when a document was created, and what changes have been made on that document. 6; Data about data.
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Data definition language A data definition language or data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database schemas.
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What is a Data Dictionary and What Role Does it Play in Semantic Interoperability? What is a Data Dictionary? A data dictionary is a set of information describing what type of data is collected within a database, its format, structure, and how the data is used. In many respects, a data dictionary can be thought of as the rules in which all the data within your system need to abide by. If all of your systems are producing data that follow the same rules - you achieve semantic interoperability.
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What is a Dataset? In order to ensure that the meaning of data in the data set is clearly understood and data can be consistently collected and used, data are defined using metadata…” This too has the notion of context and clear definitions to support usage, but also notes that the data may be collected in a variety of ways.
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- Updated February 27, 2016. Definition: Data is information that is stored in any spreadsheet program such as Excel and Google Spreadsheets. Data is stored in cells in a worksheet. Generally, each cell holds a single item of data.
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data Usage Note: The word data is the plural of Latin datum, something given.. In English, most notably in scientific usage, this plural usage is still common, as in this example: Eventually, his data suggest, a tumor's ... alterations give rise to mutant cells (Janet Raloff).
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data data. Data is information, usually in the form of facts or statistics that can be analysed. Such tasks require the worker to process a large amount of data. This will make the data easier to collect. Data is usually regarded as an uncountable noun and is used with a singular form of a verb.
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When Should You Use High Beam Headlights? Headlights on “upper” or “high” beam let you see about 350-400 feet ahead. 400 feet is your approximately stopping distance when driving at 50-55 mph. That is about the length of a city block. In other words, high beams let you see twice as far as low beams.
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data analysis Definition of data analysis: The process of evaluating data using analytical and logical reasoning to examine each component of the data provided. This form of analysis is just one of the many steps that must be completed when ...
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Data dictionary From Wikipedia, the free encyclopedia. Not to be confused with Dictionary (data structure). A data dictionary, or metadata repository, as defined in the IBM Dictionary of Computing, is a centralized repository of information about data such as meaning, relationships to other data, origin, usage, and format..
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Definitions &Translations Data (n. pl.). a collection of facts, observations, or other information related to a particular question or problem; as, the historical data show that the budget deficit is only a small factor in determining interest rates.
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- What is Define Dictionary Meaning? Define Dictionary Meaning is an easy to use platform where anyone can create and share short informal definition of any word. Best thing is, its free and you can even contribute without creating an account.
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Final Data: raw facts Little meaning unless orgranized in some logical order. recognized by the computer as a single character. ex. phone #, DOB, name. Field: a character or group of characters that has a specific meaning, Used to define and store data.
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Using a Data Dictionary Introducing the Data Dictionary The term data dictionary is used by many, including myself, to denote a separate set of tables that describes the application tables. The Data Dictionary contains such information as column names, types, and sizes, but also descriptive information such as titles, captions, primary keys, foreign keys, and hints to the user interface about how to display the field.
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What is Data Classification? A Data Classification Definition A Data Classification Definition. Data Classification defined in Data Protection 101, our series on the fundamentals of data security. A Definition of Data Classification. Data classification is broadly defined as the process of organizing data by relevant categories so that it may be used and protected more efficiently.
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What is Data Modeling? The term data model actually refers to two very different things: a description of data structure and the way data are organized using, for example, a database management system. Data structure A data model describes the structure of the data within a given domain and, by implication, the underlying structure of that domain itself.
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data point A data point is a discrete unit of information. In a general sense, any single fact is a data point. In a statistical or analytical context, a data point is usually derived from a measurement or research and can be represented numerically and/or graphically. The term data point is roughly equivalent to datum, the singular form of data.
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What is a Data Dictionary? What is a Data Dictionary? A Data Dictionary, also called a Data Definition Matrix, provides detailed information about the business data, such as standard definitions of data elements, their meanings, and allowable values.