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  2. Varchar - Wikipedia

    en.wikipedia.org/wiki/Varchar

    Varchar fields can be of any size up to a limit, which varies by databases: an Oracle 11g database has a limit of 4000 bytes, [1] a MySQL 5.7 database has a limit of 65,535 bytes (for the entire row) [2] and Microsoft SQL Server 2008 has a limit of 8000 bytes (unless varchar(max) is used, which has a maximum storage capacity of 2 gigabytes).

  3. List of Microsoft Office filename extensions - Wikipedia

    en.wikipedia.org/wiki/List_of_Microsoft_Office...

    Microsoft Excel uses dedicated file formats that are not part of OOXML, and use the following extensions:.xlsb – Excel binary worksheet (BIFF12).xla – Excel add-in that can contain macros.xlam – Excel macro-enabled add-in.xll – Excel XLL add-in; a form of DLL-based add-in [1].xlw – Excel work space; previously known as "workbook"

  4. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    Many operating systems do not limit filenames to one extension shorter than 4 characters, as was common with some operating systems that supported the File Allocation Table (FAT) file system. Examples of operating systems that do not impose this limit include Unix-like systems, and Microsoft Windows NT, 95-98, and ME which have no three ...

  5. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    &name; where name is the case-sensitive name of the entity. The semicolon is required. Because numbers are harder for humans to remember than names, character entity references are most often written by humans, while numeric character references are most often produced by computer programs. [1]

  6. Filename - Wikipedia

    en.wikipedia.org/wiki/Filename

    Maximum of 8 character file name with maximum 8 character file type, separated by whitespace. For example, a TEXT file called MEMO on disk A would be accessed as "MEMO TEXT A". (Later versions of VM introduced hierarchical filesystem structures, SFS and BFS, but the original flat directory "minidisk" structure is still widely used.)

  7. UTF-8 - Wikipedia

    en.wikipedia.org/wiki/UTF-8

    Declared character set for the 10 million most popular websites since 2010 Use of the main encodings on the web from 2001 to 2012 as recorded by Google, [26] with UTF-8 overtaking all others in 2008 and over 60% of the web in 2012 (since then approaching 100%). UTF-8 is the only encoding of Unicode (explicitly) listed there, and the rest only ...

  8. Data hierarchy - Wikipedia

    en.wikipedia.org/wiki/Data_hierarchy

    Data organization involves characters, fields, records, files and so on. [ 1 ] [ 2 ] This concept is a starting point when trying to see what makes up data and whether data has a structure. For example, how does a person make sense of data such as 'employee', 'name', 'department', 'Marcy Smith', 'Sales Department' and so on, assuming that they ...

  9. Symbolic Link (SYLK) - Wikipedia

    en.wikipedia.org/wiki/SYmbolic_LinK_(SYLK)

    Even if a SYLK file is created by an application that supports Unicode (for example Microsoft Excel), the SYLK file will be encoded in the current system's ANSI code page, not in Unicode. If the application contained characters that were displayable in Unicode but have no code point in the current system's code page, they will be converted to ...

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