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admin:indexing:creation:home [2012/01/30 16:35]
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admin:indexing:creation:home [2016/06/28 22:38]
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-====== Administration:​ Omnidex Indexing ====== 
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-===== Indexing Creation ===== 
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-**[[admin:​indexing:​creation:​home|Overview]]** | 
-[[admin:​indexing:​creation:​declaring|Declaring Indexes]] |  
-[[admin:​indexing:​creation:​updating|Updating Indexes]] | 
-[[admin:​indexing:​creation:​files|Index Files]] | 
-[[admin:​indexing:​creation:​performance|Performance]] 
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-==== Overview ==== 
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-Most relational databases, such as Oracle, SQL Server and MySQL, encourage administrators to create a few carefully-chosen indexes on a table. ​ These indexes are created using the CREATE INDEX statement, which sequentially scans the table and populates the index. ​ A table with three or four indexes will require three or four CREATE INDEX statements, each of which will sequentially scan the table and populate the index. 
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-Omnidex'​s indexing strategy often results in hundreds of indexes per table; therefore, Omnidex takes a more optimized approach to index creation. ​ It is inefficient to sequentially scan the table for each and every index, regardless of whether there will be a few indexes, or hundreds of indexes. ​ With Omnidex, you first declare all of the properties and options for all of the indexes, and then they are all populated with one command. ​ This command scans the table once, populating all of the indexes at the same time.  This allows indexes to be created at a much faster rate than the relational databases. 
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-If needed, Omnidex does allow an index to be created individually;​ however, this is not commonly needed. ​ Omnidex generally populates indexes at a rate of 1-5 billion keywords per hour, depending on the underlying hardware. ​ This fast indexing rate makes it convenient to simply rebuild all of the indexes, usually in minutes. ​ 
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-====  ====  
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-**[[admin:​indexing:​creation:​declaring|Next]]** 
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-====== Additional Resources ====== 
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-See also: 
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