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One method for deduplicating data relies on the use of cryptographic hash functions to identify duplicate segments of data. If two different pieces of information generate the same hash value, this is known as a collision. The probability of a collision depends mainly on the hash length (see birthday attack).
In a database, a table is a collection of related data organized in table format; consisting of columns and rows. In relational databases , and flat file databases , a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows , the cell being the unit where a row and column intersect ...
At one time he stated that the hospital was located in the spare bedroom of his house. The illusory relocation to a familiar place (such as a home or town the patient knows well) is a common theme, although occasionally the patient may believe that they are resident in more fantastical or exotic locations.
Duplicated ureter. Duplicated ureter or duplex collecting system is a congenital condition in which the ureteric bud, the embryological origin of the ureter, splits (or arises twice), resulting in two ureters draining a single kidney. It is the most common renal abnormality, occurring in approximately 1% of the population. [1] [2]
In computer science, an inverted index (also referred to as a postings list, postings file, or inverted file) is a database index storing a mapping from content, such as words or numbers, to its locations in a table, or in a document or a set of documents (named in contrast to a forward index, which maps from documents to content). [1]
Reduplication is often described phonologically in one of two ways: either (1) as reduplicated segments (sequences of consonants/vowels) or (2) as reduplicated prosodic units (syllables or moras). In addition to phonological description, reduplication often needs to be described morphologically as a reduplication of linguistic constituents (i.e ...
Another possible fate for duplicate genes is that both copies are equally free to accumulate degenerative mutations, so long as any defects are complemented by the other copy. This leads to a neutral " subfunctionalization " (a process of constructive neutral evolution ) or DDC (duplication-degeneration-complementation) model, [ 29 ] [ 30 ] in ...
According to DDC, this period of neutral drift may eventually lead to the complementary retention of sub-functions distributed over the two gene copies. This comes about by activity reducing (degenerative) mutations in both duplicates, accumulating over time periods and many generations.