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index stop
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 a database table is accessed. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.
An index is a copy of selected columns of data, from a table, that is designed to enable very efficient search. An index normally includes a "key" or direct link to the original row of data from which it was copied, to allow the complete row to be retrieved efficiently. Some databases extend the power of indexing by letting developers create indexes on column values that have been transformed by functions or expressions. For example, an index could be created on upper(last_name), which would only store the upper-case versions of the last_name field in the index. Another option sometimes supported is the use of partial indices, where index entries are created only for those records that satisfy some conditional expression. A further aspect of flexibility is to permit indexing on user-defined functions, as well as expressions formed from an assortment of built-in functions.
KNIGHTS ARMAMENT - INDEX STOP M-LOK
New, no package...
Yes it is dusty.. :rolleyes:
I take PayPal friends and family
Shipping OK, buyer pays shipping (4.99)
No separate parts purchase requests please.
No trade requests please.
No face-to-face requests please (Simply do not have time, sorry).
New Arisaka index stop, never mounted.
M-lok
Genuine product, not a knock off.
I purchased it directly from Arisaka’s webpage.
I take PayPal friends and family.
shipping OK, buyer pays for shipping ($4.99)
No trade request please.
No face to face requests please.