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A relational database management system uses SQL MERGE (also called upsert) statements to INSERT new records or UPDATE or DELETE existing records depending on whether condition matches. It was officially introduced in the SQL:2003 standard, and expanded [citation needed] in the SQL:2008 standard.
Used for formatting ranges of dates. Can accept an unlimited number of start/end pairs. It will automatically truncate the end date to the last two digits if the rest of the digits match. If the end date is missing, the range will be presented with just the start date (or you can set the end date to "present").
The last modification date stamp (and with DELWATCH 2.0+ also the file deletion date stamp, and since DOS 7.0+ optionally also the last access date stamp and creation date stamp), are stored in the directory entry with the year represented as an unsigned seven bit number (0–127), relative to 1980, and thereby unable to indicate any dates in ...
Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL . [ 1 ] It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions.
C#, PL/SQL, Transact-SQL, PowerBuilder Windows only 1995 2017 Proprietary VSdocman: Helixoft Text VB, VBScript, C# Windows only 2003 Oct 2 9.0 Proprietary YARD: Loren Segal Text Ruby Any 2007/02/24 0.7.3 MIT Name Creator Input format Languages (alphabet order) OS support First public release date Latest stable version Software license
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If a time zone designator is required, it follows the combined date and time. For example, "2007-04-05T14:30Z" or "2007-04-05T12:30−02:00". Either basic or extended formats may be used, but both date and time must use the same format. The date expression may be calendar, week, or ordinal, and must use a complete representation.
Format.Extent Crosswalks show people where to put the data from one scheme into a different scheme. They are often used by libraries, archives, museums, and other cultural institutions to translate data to or from MARC standards, Dublin Core, Text Encoding Initiative (TEI), and other metadata schemes.