PostgreSQL - PostgreSQL PostgreSQL is a free object-relational database server, released under a BSD-style license. It is an alternative to other free-software database systems (such as MySQL, Firebird, and SapDB), as well as proprietary systems such as Oracle and IBM's DB2. The official pronunciation of "PostgreSQL" is "Post-Gress-Q-L". Table of contents showTocToggle("show","hide") 1 History 2 Description 3 Features 4.
Ingres - a version of the BSD license. By the mid-1980s Ingres had spawned a number of commercial database applications, including Sybase, SQL Server, NonStop SQL, Informix and a number of others. A follow-on project started in the mid-1980s as Postgres, leading to the development of PostgreSQL, Illustra, and later versions of Informix. By any measure, Ingres is one of the most influential modern computer research projects. History Ingres In 1973 when the System R project was getting started at IBM, the research team released a series of papers describing the system they were building. Two scientists at Berkeley, Michael Stonebraker and Eugene Wong, became interested in concept after reading the papers, and decided to start a relational database research project of their own. They had already raised money for researching a geographic.
Database management system - sets. Although promoted for this role, they first came on the market in an area when databases were too small to need such systems, or so large they used custom solution anyway. As a general solution the multidimensional system never became popular directly. Object databases However the multidimensional systems did have one lasting impact on the market, they led directly to the development of the object database systems. Based on the same general structure and concepts as the multidimentional systems they generally developed out of, these new systems allowed the user to store objects directly in the database. That is, the programming constructs being used in the object oriented programming world could be used directly in the database, instead of first being converted to some other format. This could happen because.
Database transaction - transactions is usually issued to the database system in a language like SQL in this form: Begin the transaction Execute several queries (although any updates to the database aren't actually visible to the outside world yet) Commit the transaction (updates become visible if the transaction is successful) If the transaction fails at any point (possibly before getting to the Commit phase), the database system will rollback any changes. All other transactions will behave the same way as if the transaction had never existed. Transactions are supported in some form or other in database systems like Mimer SQL, PostgreSQL, MySQL and Oracle. See also: Distributed transaction Nested transaction ACID properties.
Database log - a particular change to the database. Each correspond with exactly one other Update Log Record (although the corresponding update log record is not typically stored in the Compensation Log Record). It includes this extra information: undoNextLSN: This field contains the LSN of the next log record that is to be undone for transaction that wrote the last Update Log. Commit Record notes a decision to commit a transaction. Abort Record notes a decision to abort and hence rollback a transaction. Checkpoint Record notes that a checkpoint has been made. These are used to speed up recovery. They record information that eliminates the need to read a long way into the log's past. This varies according to checkpoint algorithm. If all dirty pages are flushed while creating the checkpoint (as in PostgreSQL),.
Categorical list of programming languages - (methods). Thus the effects of a change to the code remain localized. Object classes can be extended by inheritance in most of these languages. Examples of object-oriented languages include: Ada 95 C++ C# Common Lisp Delphi ECMAScript (aka JavaScript -- originally from Netscape) Eiffel Java (closely related to C++, but with garbage collection, removal of unsafe features, compilation to universally runnable 'bytecode', protective sandbox for security -- originally from Sun Micro) Modula-2modula-3 (data abstraction, information hiding, strong typing, full modularity -- from N Wirth) Modula-3 (added more object oriented features to Modula-2) NewtonScript Oberon(full object orientation equivalence in an original, strongly typed, Wirthian manner) Objective C Perl 5 PHP PowerBuilder Python (object oriented interpretive language) Ruby Sather Self Simula (the first object oriented language -- from Norway) Smalltalk (full bore object.
ScriptBasic programming language - The precompiled version available for Windows and Linux includes a command line version and a standalone web server. This BASIC can be the choice for developers, who seek a BASIC variant that runs on UNIX as well as under Windows. ScriptBasic has an open interface for module developers. There are several external modules developed by the developer of ScriptBasic as well as by other developers. These include data base connection handling for various database systems (MySQL, PostgreSQL, ODBC and others), binding to the library CURL, PNG graphics, GTK graphics window handling, socket handling, regular expression, thread support, compression algorithms and CGI. ScriptBasic also has an open interface for preprocessor developers. These are modules that may act not only during run-time but also compile time, thus making it possible to alter the.
SQL - without major modifications. Most people in the field believe that this lack of compatibility is intentional in order to ensure vendor lock-in for proprietary database systems. As the name implies, SQL is designed for a specific, limited purpose -- querying data contained in a relational database. As such, it is a set-based programming language rather than a procedural language such as C or BASIC, which are designed to solve a much broader set of problems. Language extensions such as PL/SQL are designed to address this by adding procedural elements to SQL while maintaining SQL's advantages. Another approach is to allow procedural language code to be embedded in and interact with the database. For example, Oracle and others include Java in the database, while PostgreSQL allows functions to be written in Perl,.
REALbasic programming language - for each section. The IDE for the current version (5.2.4) runs on Mac OS, Mac OS X and Microsoft Windows. The professional edition can compile programs for all these platforms from the same source file. It can also access databases (Oracle, PostgreSQL, MySQL etc.). The standard edition can only compile programs for a limited set of platforms, and does not access databases. REALbasic has a complete feature set supporting hash tables, QuickTime, serial, TCP/IP sockets, Apple Events, ActiveX, OLE, and API calls on Mac and Windows. Here's some sample code to take the value from two editfields (called firstfield and secondfield), and add them and put them in a third field called thirdfield. thirdfield.text = str(val(firstfield.text) + val(secondfield.text)).
Relational database management system - of the relational model was the Multics Relational Data Store, first sold in 1978. Others have been Berkeley Ingres QUEL and IBM BS12. Today, popular commercial RDBMS's for large databases include Oracle, Microsoft SQL Server, Sybase SQL Server, and IBM's DB2. The most commonly used free RDBMS's are MySQL and PostgreSQL. Links http://www.dbdebunk.com argues that it is important that the predicate relational should be reserved for those DBMSs that are fully faithful to the relational model. However, this is not common practice..
Pathetic.org - was started in 1998 by Gavin M. Roy and grew out of a poetry circle called the Pathetic Poets Society at California State University, Fullerton. The pathetic.org service runs open source software, including Gentoo Linux, Apache, PHP, and PostgreSQL. Roy intends to open source the PHP software that runs the site, which is currently at version 7.0. Pathetic.org is free to join, but membership is screened by a membership committee which evaluates, among other things, the quality of a sample submitted poem. Because the focus of the site is on creating a poetry circle online, the emphasis is not on the quantity of members, but rather the quality of members..
PHP-Nuke - server which supports the PHP extension (such as the Apache HTTP Server), as well as an SQL database (such as MySQL, mSQL, PostgreSQL, ODBC, Adabas, Sybase or Interbase). Table of contents showTocToggle("show","hide") 1 Features of PHP-Nuke 2 Forks 3.
PHP programming language - it is more than just a scripting language. Thanks to its modular design, PHP can also be used to develop GUI applications, and it can be used from the command line just like Perl or Python can be. PHP allows, among other things, easy interaction with a large number of relational database systems (Oracle, DB2, MySQL, PostgreSQL, etc.), while maintaining a simple and straightforward syntax. PHP runs on every major operating systems, including Unix, Linux, Windows, and Mac OS X and can interact with all major web servers. The official PHP website contains extensive online documentation. The Linux, Apache, MySQL, PHP¹ (LAMP) architecture has become very popular in the industry as a way of cheaply deploying reliable, scalable, and secure web applications. PHP is the result of the collective efforts of.
PhpBB - scripting language and a variety of database systems: mySQL PostgreSQL MSSQL Microsoft Access Oracle (with modification) Besides the database support, phpBB's greatest advantages are its full and easy to use templating system allowing complete customisation, and the internationalisation support, with 45 different non-english language packs currently released, from Chinese to Asturian. Like many popular modern forum systems, phpBB started out as a UBB clone, in mid 2000. phpBB 1.0.0 was released by December 2000, and the 1.x codebase was improved and enlarged until the release of version 1.4.4 in November 2001. The next release, 2.0.0, was developed from scratch and released in April 2002, and was distributed with a new default design, which, while considered overused by some, has influenced the designs of several competitors. The current development branch (2.1.x, to.
PL SQL - constructions such as triggers. PL/SQL is analogous to the embedded procedural languages for other relational databases. Sybase and its derivative Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which tries to emulate PL/SQL to an extent), and Oracle can also use methods written in Java. Aside from some proprietary functions (notably Oracle's UTL_FILE package) PL/SQL code is nearly identical to Transact-SQL; conversions are simple if no proprietary features are used. References Steven Feuerstein (2002). Oracle PL/SQL Programming, 3rd ed. O'Reilly & Associates. ISBN 0596003811. (Considered by many to be the "bible" of PL/SQL development)..
PostGIS - system software program that adds support for geographic objects to the PostgreSQL object-relational database. Released under the GNU General Public License. External Link http://postgis.refractions.net/.
O'Reilly & Associates - it is much shorter than the current default duration of the copyright monopoly in copyright law. Well-known books published by O'Reilly include (in alphabetical order): Creating Applications With Mozilla (ISBN 0-596-00052-9) Google Hacks (ISBN 0-596-00447-8)(preview online) Mastering Regular Expressions (ISBN 0-596-00289-0) Practical PostgreSQL (ISBN 1-56592-846-6) Running Linux (ISBN 0-596-00272-6)(preview online: 4th 3rd edition) Programming Perl (known as camel book)(preview online) Learning perl (known as the llama book) The company also publishes books on travel under the "Traveler's Tales" brand and health care under the "Patient-Centered Guides" brand. Their Safari Bookshelf makes the complete text of over 1,000 technical books available for online preview or subscription reading. It includes books from Adobe Press, Alpha Books, Cisco Press, Financial Times Prentice Hall, Microsoft Press, New Riders Publishing, O'Reilly, Peachpit Press, Prentice Hall, Prentice.
Object-relational database - to understand relationships between data and make it easy to collect related records. In an address book type application an additional table would be added to the ones above to hold zero or more addresses for each user. Using a traditional RDBMS, collecting information for both the user and their address requires a "join": SELECT InitCap(C.Surname) ', ' InitCap(C.FirstName), A.city FROM Customers C, Addresses A WHERE A.Cust_Id=C.Id -- the join AND C.city="New York" The same query in an O-R system is much simpler: SELECT Formal( C.Name ) FROM Customers C WHERE C.address.city="New York" -- the linkage is 'understood' by the ORDB Many of the concepts in ORDBMS's were pioneered in the Postgres database, which eventually led to the open source PostgreSQL which is available today and gaining mind share. The first.
Operator overloading - b × c without operator overloading our_new_type_add (a, our_new_type_multiply (b,c)) Only in case when operators can be called implicitly they are of some use other than aesthetics. This is the case with Ruby operator to_s, which returns a string representation of an object and with operators in PostgreSQL, where mathematical transformations can be defined on operators and PostgreSQL may use many optimalizations to expressions that use them. Criticism Operator overloading has been criticised because it allows programmers to give operators completely different functionality depending on the types of their operands. C++'s usage of the "<<" operator is a particularly bad example: The expression a << 1 will return two times the value of a if a is an integer variable, but if a is an output stream instead this will write.
OpenOffice.org - OOo Version 1.1 was released on September 2, 2003. It includes: Writer (word processor) Calc (spreadsheet program) Draw (graphics program) Impress (presentation program) visual HTML editor Macro recorder StarOffice Basic Export and import Microsoft Word and DocBook XML, export PDF and Macromedia Flash. OOo can also be configured to integrate with other databases such as mySQL and postgreSQL, so as to offer similar functionality to Microsoft Access. Table of contents showTocToggle("show","hide") 1 History 2 OpenOffice.org in the marketplace 3 Development 4 GNOME and KDE integration 5.
