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  2. List of SQL reserved words - Wikipedia

    en.wikipedia.org/wiki/List_of_SQL_reserved_words

    Reserved words in SQL and related products In SQL:2023 [3] In IBM Db2 13 [4] In Mimer SQL 11.0 [5] In MySQL 8.0 [6] In Oracle Database 23c [7] In PostgreSQL 16 [1] In Microsoft SQL Server 2022 [2]

  3. Comparison of relational database management systems - Wikipedia

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

    Note (4): Used for InMemory ColumnStore index, temporary hash index for hash join, Non/Cluster & fill factor. Note (5): InnoDB automatically generates adaptive hash index [125] entries as needed. Note (6): Can be implemented using Function-based Indexes in Oracle 8i and higher, but the function needs to be used in the sql for the index to be used.

  4. Delete (SQL) - Wikipedia

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

    Delete (SQL) In the database structured query language (SQL), the DELETE statement is used to remove one or more records from a table. A subset may be defined for deletion using a condition, otherwise all records are removed. [1] Some database management systems (DBMSs), like MySQL, allow deletion of rows from multiple tables with one DELETE ...

  5. Fractal tree index - Wikipedia

    en.wikipedia.org/wiki/Fractal_tree_index

    Space. O (N/B) O (N/B) In computer science, a fractal tree index is a tree data structure that keeps data sorted and allows searches and sequential access in the same time as a B-tree but with insertions and deletions that are asymptotically faster than a B-tree. Like a B-tree, a fractal tree index is a generalization of a binary search tree in ...

  6. Table (database) - Wikipedia

    en.wikipedia.org/wiki/Table_(database)

    Table (database) 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 ...

  7. H2 (database) - Wikipedia

    en.wikipedia.org/wiki/H2_(database)

    Website. h2database.com. H2 is a relational database management system written in Java. It can be embedded in Java applications or run in client-server mode. [1] The software is available as open source software Mozilla Public License 2.0 or the original Eclipse Public License. [citation needed]

  8. ASCII - Wikipedia

    en.wikipedia.org/wiki/ASCII

    Since the space character is considered an invisible graphic (rather than a control character) [3]: 223 [10] it is listed in the table below instead of in the previous section. Code 7F hex corresponds to the non-printable "delete" (DEL) control character and is therefore omitted from this chart; it is covered in the previous section's chart.

  9. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS. It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA). Excel forms part of the Microsoft 365 suite of software.