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  2. Help:Creating tables - Wikipedia

    en.wikipedia.org/wiki/Help:Creating_tables

    Paste the table into a spreadsheet program such as freeware LibreOffice Calc (see free guide), or another spreadsheet program. See List of spreadsheet software . In Calc click on any cell in the column you want sorted, and then click on one of the sort options in the data menu at the top of the Calc window.

  3. PostgreSQL - Wikipedia

    en.wikipedia.org/wiki/PostgreSQL

    Data in child tables will appear to exist in the parent tables, unless data is selected from the parent table using the ONLY keyword, i.e. SELECT * FROM ONLY parent_table;. Adding a column in the parent table will cause that column to appear in the child table.

  4. Postgres-XL - Wikipedia

    en.wikipedia.org/wiki/Postgres-XL

    Postgres-XL is based on Postgres-XC, an earlier distributed PostgreSQL system developed by NTT Data and EnterpriseDB. [4] In 2012, the cloud database startup StormDB [ 5 ] adopted Postgres-XC and developed some proprietary extensions and improvements to it. [ 6 ]

  5. Database normalization - Wikipedia

    en.wikipedia.org/wiki/Database_normalization

    In situations where the number of unique values of a column is far less than the number of rows in the table, column-oriented storage allow significant savings in space through data compression. Columnar storage also allows fast execution of range queries (e.g., show all records where a particular column is between X and Y, or less than X.)

  6. Select (SQL) - Wikipedia

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

    The following example of a SELECT query returns a list of expensive books. The query retrieves all rows from the Book table in which the price column contains a value greater than 100.00. The result is sorted in ascending order by title. The asterisk (*) in the select list indicates that all columns of the Book table should be included in the ...

  7. Comma-separated values - Wikipedia

    en.wikipedia.org/wiki/Comma-separated_values

    Comma-separated values (CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text, where each line of the file typically represents one data record.

  8. OpenOffice.org - Wikipedia

    en.wikipedia.org/wiki/OpenOffice.org

    A beta version of OpenOffice.org 3.4 was released on 12 April 2011, including new SVG import, improved ODF 1.2 support, and spreadsheet functionality. [4] [5] [169] Before the final version of OpenOffice.org 3.4 could be released, Oracle cancelled its sponsorship of development [17] and fired the remaining Star Division development team. [35] [58]

  9. Referential integrity - Wikipedia

    en.wikipedia.org/wiki/Referential_integrity

    [1] For referential integrity to hold in a relational database, any column in a base table that is declared a foreign key can only contain either null values or values from a parent table's primary key or a candidate key. [2] In other words, when a foreign key value is used it must reference a valid, existing primary key in the parent table.