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  2. Table data gateway - Wikipedia

    en.wikipedia.org/wiki/Table_Data_Gateway

    Table Data Gateway is a design pattern in which an object acts as a gateway to a database table. [1] The idea is to separate the responsibility of fetching items from a database from the actual usages of those objects. Users of the gateway are then insulated from changes to the way objects are stored in the database.

  3. MySQLi - Wikipedia

    en.wikipedia.org/wiki/MySQLi

    Persistent connection support was introduced in PHP 5.3 for the MySQLi extension. Support was already present in PDO MYSQL and ext/mysql. The idea behind persistent connections is that a connection between a client process and a database can be reused by a client process, rather than being created and destroyed multiple times.

  4. Create, read, update and delete - Wikipedia

    en.wikipedia.org/wiki/Create,_read,_update_and...

    CRUD is also relevant at the user interface level of most applications. For example, in address book software, the basic storage unit is an individual contact entry. As a bare minimum, the software must allow the user to: [6] Create, or add new entries; Read, retrieve, search, or view existing entries; Update, or edit existing entries

  5. View (SQL) - Wikipedia

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

    For example, a view could appear as Sales2020 or Sales2021, transparently partitioning the actual underlying table. Views take very little space to store; the database contains only the definition of a view, not a copy of all the data that it presents. Views structure data in a way that classes of users find natural and intuitive. [2]

  6. Category:Articles with example PHP code - Wikipedia

    en.wikipedia.org/wiki/Category:Articles_with...

    This category is not shown on its member pages unless the appropriate user preference (appearance → show hidden categories) is set. Pages in category "Articles with example PHP code" The following 35 pages are in this category, out of 35 total.

  7. PHP syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/PHP_syntax_and_semantics

    PHP has hundreds of base functions and thousands more from extensions. Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [35]

  8. Real-time database - Wikipedia

    en.wikipedia.org/wiki/Real-time_database

    A transaction is different from a stream because a stream only allows read-only operations, and transactions can do both read and write operations. This means in a stream, multiple users can read from the same piece of data, but they cannot both modify it. [4] A database must let only one transaction operate at a time to preserve data ...

  9. LevelDB - Wikipedia

    en.wikipedia.org/wiki/LevelDB

    The table implementation for the Bigtable system was developed starting in about 2004, and is based on a different Google internal code base than the LevelDB code. That code base relies on a number of Google code libraries that are not themselves open sourced, so directly open sourcing that code would have been difficult.