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Visual Objects
Visual Objects is an object-oriented computer programming language that is used to create computer programs that operate primarily under Windows. Although it can be used as a general-purpose programming tool, it is almost exclusively used to create database programs. The original Visual Objects project (code-named Aspen) was started as part of Nantucket's attempts to bring the Clipper language to Windows, and move from the procedural to the object-oriented style. It also converted Clipper from a p-code system to being a true native compiler and introduced more elements of the C language (such as typed variables), while including Windows extensions (such as COM, ODBC, and later ADO). With its symbol datatype, it offers the ability to form name-based linkages, which may be used to connect menu events to object methods or form direct linkages between server columns and controls. The Windows version was finally brought to market by Computer Associates. Unfortunately it was rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Object-oriented Programming
Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which can contain data and code. The data is in the form of fields (often known as attributes or ''properties''), and the code is in the form of procedures (often known as ''methods''). A common feature of objects is that procedures (or methods) are attached to them and can access and modify the object's data fields. In this brand of OOP, there is usually a special name such as or used to refer to the current object. In OOP, computer programs are designed by making them out of objects that interact with one another. OOP languages are diverse, but the most popular ones are class-based, meaning that objects are instances of classes, which also determine their types. Many of the most widely used programming languages (such as C++, Java, Python, etc.) are multi-paradigm and they support object-oriented programming to a greater or lesser degree, typically in combination with imper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ActiveX Data Objects
In computing, Microsoft's ActiveX Data Objects (ADO) comprises a set of Component Object Model (COM) objects for accessing data sources. A part of MDAC (Microsoft Data Access Components), it provides a middleware layer between programming languages and OLE DB (a means of accessing data stores, whether databases or not, in a uniform manner). ADO allows a developer to write programs that access data without knowing how the database is implemented; developers must be aware of the database for connection only. No knowledge of SQL is required to access a database when using ADO, although one can use ADO to execute SQL commands directly (with the disadvantage of introducing a dependency upon the type of database used). Microsoft introduced ADO in October 1996, positioning the software as a successor to Microsoft's earlier object layers for accessing data sources, including RDO (Remote Data Objects) and DAO (Data Access Objects). ADO is made up of four collections and twelve objects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual FoxPro
Visual FoxPro is a Microsoft data-centric procedural programming language with object-oriented programming (OOP) features. It was derived from FoxPro (originally known as FoxBASE) which was developed by Fox Software beginning in 1984. Fox Technologies merged with Microsoft in 1992, after which the software acquired further features and the prefix "Visual". FoxPro 2.6 worked on Mac OS, DOS, Windows, and Unix. Visual FoxPro 3.0, the first "Visual" version, reduced platform support to only Mac and Windows, and later versions 5, 6, 7, 8 and 9 were Windows-only. The current version of Visual FoxPro is COM-based and Microsoft has stated that they do not intend to create a Microsoft .NET version. Version 9.0, released in December 2004 and updated in October 2007 with the SP2 patch, was the final version of the product. History Visual FoxPro originated as a member of the class of languages commonly referred to as "xBase" languages, which have syntax based on the dBase programming l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XSharp
X#, pronounced X sharp and often written XSharp, is an xBase-compatible programming language for the Microsoft .NET platform. X# has been built on top of Roslyn, the open source architecture behind the current Microsoft C# and Visual Basic .NET compilers. The X# compiler is intended to support multiple dialects in the xBase programming language family. It supports Core, Visual Objects, Vulcan.NET, xBase++, Harbour, Foxpro and more. The project is intended as an opensource community effort, but is at the moment still partly closed source. History In 2015, the majority of the developers of the Vulcan.NET team started the XSharp compiler development due to conflicts with their previous employer GrafXSoft about future developments. As a proof of concept and viability, the Vulcan IDE was recompiled and rebuilt in XSharp into XIDE. On July 3, 2017, the first general release (version 1.0.1, Anjou) was published. Version 2.5.1.0 was released on July 6th 2020. The X# development t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harbour (software)
Harbour is a computer programming language, primarily used to create database/business programs. It is a modernized, open sourced and cross-platform version of the older Clipper system, which in turn developed from the dBase database market of the 1980s and 1990s. Harbour code using the same databases can be compiled under a wide variety of platforms, including Microsoft Windows, Linux, Unix variants, several BSD descendants, Mac OS X, MINIX 3, Windows CE, Pocket PC, Symbian, iOS, Android, QNX, VxWorks, OS/2 (including eComStation and ArcaOS), BeOS/Haiku, AIX and MS-DOS. History The idea of a free software Clipper compiler had been floating around for a long time and the subject has often cropped up in discussion on comp.lang.clipper. Antonio Linares founded the Harbour project and the implementation was started in March 1999. The name "Harbour" was proposed by Linares, it is a play on a Clipper as a type of ship. Harbour is a synonym for port (where ships dock), and Har ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XBase
xBase is the generic term for all programming languages that derive from the original dBASE ( Ashton-Tate) programming language and database formats. These are sometimes informally known as dBASE "clones". While there was a non-commercial predecessor to the Ashton-Tate product (Vulcan written by Wayne Ratliff), most clones are based on Ashton-Tate's 1986 dBASE III+ release — scripts written in the dBASE III+ dialect are most likely to run on all the clones. History of the X Ashton-Tate always maintained that everything relating to dBASE was proprietary, and as a result, filed lawsuits against several of the "clone" software vendors. One effect of this action was to cause the clone vendors to avoid using the term "dBASE": a trademark term held by Ashton-Tate. This gave rise to the creation of the generic term "xBase" meaning "dBASE or dBASE-like." A suggested name that narrowly failed was "*base" (pronounced "star base" and an homage to Vulcan and ''Star Trek''), and some want ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NET Framework
The .NET Framework (pronounced as "''dot net"'') is a proprietary software framework developed by Microsoft that runs primarily on Microsoft Windows. It was the predominant implementation of the Common Language Infrastructure (CLI) until being superseded by the cross-platform .NET project. It includes a large class library called Framework Class Library (FCL) and provides language interoperability (each language can use code written in other languages) across several programming languages. Programs written for .NET Framework execute in a software environment (in contrast to a computer hardware, hardware environment) named the Common Language Runtime (CLR). The CLR is an process virtual machine, application virtual machine that provides services such as security, memory management, and exception handling. As such, computer code written using .NET Framework is called "managed code". FCL and CLR together constitute the .NET Framework. FCL provides the user interface, data access, d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulcan
Vulcan may refer to: Mythology * Vulcan (mythology), the god of fire, volcanoes, metalworking, and the forge in Roman mythology Arts, entertainment and media Film and television * Vulcan (''Star Trek''), name of a fictional race and their home planet and language in the ''Star Trek'' franchise * Black Vulcan, a fictional African American superhero on the animated series ''Super Friends'' * Kamen Rider Vulcan, a character in the series ''Kamen Rider Zero-One'' * Vulcan, a fictional planet in the ''Doctor Who'' season ''The Power of the Daleks'' Print * ''Vulcan'' (Fleetway), a 1975–1976 IPC Comic * Vulcan (DC Comics), a fictional character * Vulcan (Marvel Comics), a fictional supervillain * ''Vulcan!'', a 1978 ''Star Trek'' novel by Kathleen Sky * ''The Vulcan'', a magazine from various organizations within the Young Fine Gael * ''Vulcan'', a gay pornography magazine, made famous in a High Court test case by serial killer Dennis Nilsen * Vulcan, a fictional series of artifici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borland Delphi
Delphi is a general-purpose programming language and a software product that uses the Delphi dialect of the Object Pascal programming language and provides an integrated development environment (IDE) for rapid application development of desktop, mobile, web, and console software, currently developed and maintained by Embarcadero Technologies. Delphi's compilers generate native code for Microsoft Windows, macOS, iOS, Android and Linux (x64). Delphi includes a code editor, a visual designer, an integrated debugger, a source code control component, and support for third-party plugins. The code editor features Code Insight (code completion), Error Insight (real-time error-checking), and refactoring. The visual forms designer has the option of using either the Visual Component Library (VCL) for pure Windows development or the FireMonkey (FMX) framework for cross-platform development. Database support is a key feature and is provided by FireDAC (Database Access Components). Delphi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Associates
CA Technologies, formerly known as CA, Inc. and Computer Associates International, Inc., is an American multinational corporation headquartered in New York City. It is primarily known for its business-to-business (B2B) software with a product portfolio focused on Agile software development, DevOps, and computer security software spanning across a wide range of environments such as a mainframe, distributed computing, cloud computing, and mobile devices. The company markets nearly 200 software products. Some of the best-known are ACF2 (security), TopSecret (security), Datacom (database), Easytrieve (report generator), IDMS (database), InterTest (debugging), Librarian, Panvalet (source code library management), and TLMS (tape library management). Through 2018, CA Technologies maintained offices in more than 40 countries and employed approximately 11,300 people. CA holds more than 1,500 patents worldwide, and has more than 900 patent applications pending. It was headquartered on L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Method (computer Science)
A method in object-oriented programming (OOP) is a procedure associated with a message and an object. An object consists of ''state data'' and ''behavior''; these compose an ''interface'', which specifies how the object may be utilized by any of its various consumers. A method is a behavior of an object parametrized by a consumer. Data is represented as properties of the object, and behaviors are represented as methods. For example, a Window object could have methods such as open and close, while its state (whether it is open or closed at any given point in time) would be a property. In class-based programming, methods are defined within a class, and objects are instances of a given class. One of the most important capabilities that a method provides is ''method overriding'' - the same name (e.g., area) can be used for multiple different kinds of classes. This allows the sending objects to invoke behaviors and to delegate the implementation of those behaviors to the receiving o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menu (computing)
In user interface design, a menu is a list of options or commands presented to the user of a computer or embedded system. A menu may either be a system's entire user interface, or only part of a more complex one. Navigation A user chooses an option from a menu by using an input device. Some input methods require linear navigation: the user must move a cursor or otherwise pass from one menu item to another until reaching the selection. On a computer terminal, a reverse video bar may serve as the cursor. Touch user interfaces and menus that accept codes to select menu options without navigation are two examples of non-linear interfaces. Some of the input devices used in menu interfaces are touchscreens, keyboards, mice, remote controls, and microphones. In a voice-activated system, such as interactive voice response, a microphone sends a recording of the user's voice to a speech recognition system, which translates it to a command. Types of menus A computer using a com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
