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  2. Merge (SQL) - Wikipedia

    en.wikipedia.org/wiki/Merge_(SQL)

    It also supports >REPLACE INTO syntax, [6] which first attempts an insert, and if that fails, deletes the row, if exists, and then inserts the new one. There is also an IGNORE clause for the INSERT statement, [ 7 ] which tells the server to ignore "duplicate key" errors and go on (existing rows will not be inserted or updated, but all new rows ...

  3. Salesforce - Wikipedia

    en.wikipedia.org/wiki/Salesforce

    As of September 2022, Salesforce is the 61st largest company in the world by market cap with a value of nearly US$153 billion. [2] It became the world's largest enterprise software firm in 2022. [3] Salesforce ranked 491st on the 2023 edition of the Fortune 500, making $31.352 billion in revenues. [4]

  4. Comparison of relational database management systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_relational...

    Max table size Max row size Max columns per row Max Blob/Clob size Max CHAR size Max NUMBER size Min DATE value Max DATE value Max column name size Informix Dynamic Server: ≈0.5 YB 12: ≈0,5YB 12: 32,765 bytes (exclusive of large objects) 32,765 4 TB 32,765 14: 10 125 13: 01/01/0001 10: 12/31/9999 128 bytes Ingres: Unlimited Unlimited 256 KB ...

  5. Duplicate code - Wikipedia

    en.wikipedia.org/wiki/Duplicate_code

    A number of different algorithms have been proposed to detect duplicate code. For example: Baker's algorithm. [7] Rabin–Karp string search algorithm. Using abstract syntax trees. [8] Visual clone detection. [9] Count matrix clone detection. [10] [11] Locality-sensitive hashing; Anti-unification [12]

  6. Merge (version control) - Wikipedia

    en.wikipedia.org/wiki/Merge_(version_control)

    It is a rough merging method, but widely applicable since it only requires one common ancestor to reconstruct the changes that are to be merged. Three way merge can be done on raw text (sequence of lines) or on structured trees. [2] The three-way merge looks for sections which are the same in only two of the three files.

  7. Merge algorithm - Wikipedia

    en.wikipedia.org/wiki/Merge_algorithm

    Repeatedly merge sublists to create a new sorted sublist until the single list contains all elements. The single list is the sorted list. The merge algorithm is used repeatedly in the merge sort algorithm. An example merge sort is given in the illustration. It starts with an unsorted array of 7 integers.

  8. Gene duplication - Wikipedia

    en.wikipedia.org/wiki/Gene_duplication

    Gene duplication (or chromosomal duplication or gene amplification) is a major mechanism through which new genetic material is generated during molecular evolution.It can be defined as any duplication of a region of DNA that contains a gene.

  9. Merge-insertion sort - Wikipedia

    en.wikipedia.org/wiki/Merge-insertion_sort

    Merge-insertion sort also performs fewer comparisons than the sorting numbers, which count the comparisons made by binary insertion sort or merge sort in the worst case. The sorting numbers fluctuate between n log 2 ⁡ n − 0.915 n {\displaystyle n\log _{2}n-0.915n} and n log 2 ⁡ n − n {\displaystyle n\log _{2}n-n} , with the same leading ...