Search results
Results From The WOW.Com Content Network
A private synonym is a synonym within a database schema that a developer typically uses to mask the true name of a table, view stored procedure, or other database object in an application schema. Private synonyms, unlike public synonyms, can be referenced only by the schema that owns the table or object.
The word 'field' is normally used interchangeably with 'column'. [5] However, database perfectionists tend to favor using 'field' to signify a specific cell of a given row. [citation needed] This is to enable accuracy in communicating with other developers. Columns (really column names) being referred to as field names (common for each row ...
In a relational database, the schema defines the tables, fields, relationships, views, indexes, packages, procedures, functions, queues, triggers, types, sequences, materialized views, synonyms, database links, directories, XML schemas, and other elements. A database generally stores its schema in a data dictionary. Although a schema is defined ...
Lotus-like text menus and windows, which was the native interface (in contrast to dBase, which had a command-line interface with menus layered on top). Particularly in Paradox 1.0 and 2.0, the user and programming manuals won readability awards [6] – they were copiously illustrated, well laid out, and explanations were written in common English.
Data Warehouse and Data Mart overview, with Data Marts shown in the top right.. A data mart is a structure/access pattern specific to data warehouse environments. The data mart is a subset of the data warehouse that focuses on a specific business line, department, subject area, or team. [1]
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.
For example, consider a database of electronic health records. Such a database could contain tables like the following: A doctor table with information about physicians. A patient table for medical subjects undergoing treatment. An appointment table with an entry for each hospital visit. Natural relationships exist between these entities:
Released by Symantec in 1985 for MS-DOS computers, Q&A's flat-file database and integrated word processing application was cited as a significant step towards making computers less intimidating and more user-friendly. One of its features was a natural language search function that utilized a 600-word internal vocabulary. [1]