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FoxBase
FoxPro was a text-based procedurally oriented programming language and database management system (DBMS), and it was also an object-oriented programming language, originally published by Fox Software and later by Microsoft, for MS-DOS, Windows, Macintosh, and UNIX. The final published release of FoxPro was 2.6. Development continued under the Visual FoxPro label, which in turn was discontinued in 2007. FoxPro was derived from FoxBase (Fox Software, Perrysburg, Ohio), which was in turn derived from dBase III ( Ashton-Tate) and dBase II. dBase II was the first commercial version of a database program written by Wayne Ratliff, called Vulcan, running on CP/M, as does dBase II. FoxPro was both a DBMS and a relational database management system (RDBMS), since it extensively supported multiple relationships between multiple DBF files (tables). However, it lacked transactional processing. FoxPro was sold and supported by Microsoft after they acquired Fox Software in its entire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FoxPro 2
FoxPro was a text-based procedurally oriented programming language and database management system (DBMS), and it was also an object-oriented programming language, originally published by Fox Software and later by Microsoft, for MS-DOS, Windows, Macintosh, and UNIX. The final published release of FoxPro was 2.6. Development continued under the Visual FoxPro label, which in turn was discontinued in 2007. FoxPro was derived from FoxBase (Fox Software, Perrysburg, Ohio), which was in turn derived from dBase III ( Ashton-Tate) and dBase II. dBase II was the first commercial version of a database program written by Wayne Ratliff, called Vulcan, running on CP/M, as does dBase II. FoxPro was both a DBMS and a relational database management system (RDBMS), since it extensively supported multiple relationships between multiple DBF files (tables). However, it lacked transactional processing. FoxPro was sold and supported by Microsoft after they acquired Fox Software in its entirety i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XBase Programming Language Family
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] |
DBase
dBase (also stylized dBASE) was one of the first database management systems for microcomputers and the most successful in its day. The dBase system includes the core database engine, a query system, a forms engine, and a programming language that ties all of these components together. dBase's underlying file format, the file, is widely used in applications needing a simple format to store structured data. Originally released as Vulcan for PTDOS in 1978, the CP/M port caught the attention of Ashton-Tate in 1980. They licensed it and re-released it as dBASE II, and later ported it to IBM PC computers running DOS. On the PC platform, in particular, dBase became one of the best-selling software titles for a number of years. A major upgrade was released as dBase III, and ported to a wider variety of platforms, adding UNIX, and VMS. By the mid-1980s, Ashton-Tate was one of the "big three" software publishers in the early business software market, the others being Lotus Developmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux
Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which includes the kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name "GNU/Linux" to emphasize the importance of GNU software, causing some controversy. Popular Linux distributions include Debian, Fedora Linux, and Ubuntu, the latter of which itself consists of many different distributions and modifications, including Lubuntu and Xubuntu. Commercial distributions include Red Hat Enterprise Linux and SUSE Linux Enterprise. Desktop Linux distributions include a windowing system such as X11 or Wayland, and a desktop environment such as GNOME or KDE Plasma. Distributions intended for ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procedural Programming Languages
Procedural programming is a programming paradigm, derived from imperative programming, based on the concept of the ''procedure call''. Procedures (a type of routine or subroutine) simply contain a series of computational steps to be carried out. Any given procedure might be called at any point during a program's execution, including by other procedures or itself. The first major procedural programming languages appeared circa 1957–1964, including Fortran, ALGOL, COBOL, PL/I and BASIC. Pascal and C were published circa 1970–1972. Computer processors provide hardware support for procedural programming through a stack register and instructions for calling procedures and returning from them. Hardware support for other types of programming is possible, but no attempt was commercially successful (for example Lisp machines or Java processors). Procedures and modularity Modularity is generally desirable, especially in large, complicated programs. Inputs are usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1984 Software
Events January * January 1 – The Bornean Sultanate of Brunei gains full independence from the United Kingdom, having become a British protectorate in 1888. * January 7 – Brunei becomes the sixth member of the Association of Southeast Asian Nations (ASEAN). * January 10 ** The United States and the Vatican (Holy See) restore full diplomatic relations. ** The Victoria Agreement is signed, institutionalising the Indian Ocean Commission. *January 24 – Steve Jobs launches the Macintosh personal computer in the United States. February * February 3 ** Dr. John Buster and the research team at Harbor–UCLA Medical Center announce history's first embryo transfer from one woman to another, resulting in a live birth. ** STS-41-B: Space Shuttle ''Challenger'' is launched on the 10th Space Shuttle mission. * February 7 – Astronauts Bruce McCandless II and Robert L. Stewart make the first untethered space walk. * February 8– 19 – The 1984 Winter Olympics are held in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fourth-generation Programming Languages
{{disambiguation ...
Fourth generation may refer to: * 4G, the fourth generation of cellular wireless standards * Fourth-generation programming language * Fourth-generation jet fighter * Fourth generation warfare, conflict characterized by a blurring of the lines between war and politics, soldier and civilian * Generation IV reactor, a set of theoretical nuclear reactor designs * History of video game consoles (fourth generation) (1987–1999) * Yonsei (Japanese diaspora), great-grandchildren of Japanese-born emigrants *A group of Pokémon, see List of generation IV Pokémon See also * Generation (other) A generation is "all of the people born and living at about the same time, regarded collectively." Generation or generations may also refer to: Science and technology * Generation (particle physics), a division of the elementary particles * Gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HIMEM
HIMEM.SYS is a DOS device driver which allows DOS programs to store data in extended memory according to the Extended Memory Specification (XMS). The memory beyond the first 1 MB of address space is required by Windows 9x/ Me in order to load; therefore, these versions of Microsoft Windows require HIMEM.SYS to be loaded to be able to run. HIMEM.SYS was first included with Windows 2.1 (1988). In MS-DOS 5.0 (1991) and later, HIMEM.SYS can be used to load the DOS kernel code into the High Memory Area (HMA) to increase the amount of available conventional memory by specifying DOS=HIGH in CONFIG.SYS. In DR DOS 5.0 (1990) and 6.0 (1991), the driver is named HIDOS.SYS rather than HIMEM.SYS, like the corresponding DCONFIG.SYS or CONFIG.SYS directive HIDOS=ON. In FreeDOS, the matching file is named HIMEM.EXE and can be loaded from the FreeDOS configuration file named FDCONFIG.SYS or CONFIG.SYS. In Windows 3.1 and Windows 9x, there is also a command-line loadable version of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extended Memory
In DOS memory management, extended memory refers to memory above the first megabyte (220 bytes) of address space in an IBM PC or compatible with an 80286 or later processor. The term is mainly used under the DOS and Windows operating systems. DOS programs, running in real mode or virtual x86 mode, cannot directly access this memory, but are able to do so through an application programming interface called the ''Extended Memory Specification'' (XMS). This API is implemented by a driver (such as HIMEM.SYS) or the operating system, which takes care of memory management and copying memory between conventional and extended memory, by temporarily switching the processor into protected mode. In this context, the term "extended memory" may refer to either the whole of the extended memory or only the portion available through this API. Extended memory can also be accessed directly by DOS programs running in protected mode using VCPI or DPMI, two (different and incompatible) methods of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expanded Memory
In DOS memory management, expanded memory is a system of bank switching that provided additional memory to DOS programs beyond the limit of conventional memory (640 KiB). ''Expanded memory'' is an umbrella term for several incompatible technology variants. The most widely used variant was the Expanded Memory Specification (EMS), which was developed jointly by Lotus Software, Intel, and Microsoft, so that this specification was sometimes referred to as "LIM EMS". LIM EMS had several versions. The first widely implemented version was EMS 3.2, which supported up to 8 MiB of expanded memory and uses parts of the address space normally dedicated to communication with peripherals (upper memory) to map portions of the expanded memory. EEMS, an expanded-memory management standard competing with LIM EMS 3.x, was developed by AST Research, Quadram and Ashton-Tate ("AQA"); it could map any area of the lower 1 MiB. EEMS ultimately was incorporated in LIM EMS 4.0, which supporte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DOS/4G
DOS/4G is a 32-bit DOS extender developed by Rational Systems (later Tenberry Software). It allows DOS programs to eliminate the 640 KB conventional memory limit by addressing up to 64 MB of extended memory on Intel 80386 and above machines. Features Functioning as a highly flexible and reusable memory extension library, DOS/4G allowed programmers to access extended memory without writing specialized code. It embeds itself in the executable file at linking time and executes before main application code, so usually DOS/4G initialization messages show up at launch. It can in principle operate within MS-DOS, PC DOS, DR-DOS and other DOS clones, the DOS boxes of OS/2, Microsoft Windows, Windows NT and Windows 95, and DOS emulators such as DOSBox. However, in practice few DOS/4G games or other applications will run on non-DOS-based versions of Windows, including Windows NT, Windows 2000 and Windows XP, since none of these allow direct access to the hardware as was used for disp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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