|
Charles Bachman
Charles William Bachman III (December 11, 1924 – July 13, 2017) was an American computer scientist, who spent his entire career as an industrial researcher, developer, and manager rather than in academia. He was particularly known for his work in the early development of database management systems. His techniques of layered architecture include his namesake Bachman diagrams. Biography Charles Bachman was born in Manhattan, Kansas, in 1924, where his father, Charles Bachman Jr., was the head football coach at Kansas State College. He attended high school in East Lansing, Michigan, where his father served as head football coach at Michigan State College from 1933–1946. In World War II he joined the United States Army and spent March 1944 through February 1946 in the South West Pacific Theater serving in the Anti-Aircraft Artillery Corps in New Guinea, Australia, and the Philippine Islands. There he was first exposed to and used fire control computers for aiming 9 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Data Store
Integrated Data Store (IDS) was an early network model , network database, database management system largely used by industry, known for its high performance. IDS became the basis for the CODASYL Data Base Task Group standards. IDS was designed in the 1960s at the computer division of General Electric (which later became Honeywell Information Systems) by Charles Bachman, who received the Turing Award from the Association for Computing Machinery for its creation, in 1973. The software was released in 1964 for the GE-200 series, GE 235 computer. By 1965, a network version for the customer Weyerhaeuser, Weyerhaeuser Lumber was in operation. IDS/II, introduced in 1975, was a . At this time the original version was labeled IDS/I. It was not easy to use or implement applications with IDS, because it was designed to maximize performance using the hardware available at that time. However, that weakness was equally its strength because skilful implementations of IDS-type databases, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
9PAC
9PAC is a common abbreviation for 709 PACkage. It was a report generator developed in 1959 for the IBM 709 and used on its successor, the IBM 7090. It was developed by SHARE, an early IBM users' group, and based on the File Maintenance and Report Generator System developed by General Electric for the IBM 702, led by Harry Tellier. Charles Bachman Charles William Bachman III (December 11, 1924 – July 13, 2017) was an American computer scientist, who spent his entire career as an industrial researcher, developer, and manager rather than in academia. He was particularly known for his ... worked on its design in 1957, and although his company's order for the 709 was cancelled, he later included some of its general concepts into the more generalized idea of navigational databases. Engineers at companies such as Union Carbide, Northwest Power Company, Philips Petroleum, Dow Chemical, and Chrysler cooperated on the project. Further reading * Jean E. Sammet 1969, p. 314. " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bachman Diagram
A data structure diagram (DSD) is the visual representation of a certain kind of data model that contains entities, their relationships, and the constraints that are placed on them. It is an older alternative to the entity–relationship model. The basic graphic notation elements of DSDs are boxes which represent entities. Arrow symbols represent relationships. Data structure diagrams are most useful for documenting complex data entities. Overview A data structure diagram is a diagram type that is used to depict the structure of data elements in the data dictionary. The data structure diagram is a graphical alternative to the composition specifications within such data dictionary entries. The data structure diagrams is a predecessor of the entity–relationship model (E–R model). In DSDs, attributes are specified inside the entity boxes rather than outside of them, while relationships are drawn as boxes composed of attributes which specify the constraints that bind entit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Report Generator
A report generator is a computer program whose purpose is to take data from a source such as a database, XML stream or a spreadsheet, and use it to produce a document in a format which satisfies a particular human readership. Report generation functionality is almost always present in database systems, where the source of the data is the database itself. It can also be argued that report generation is part of the purpose of a spreadsheet. Standalone report generators may work with multiple data sources and export reports to different document formats. Information systems theory specifies that information delivered to a target human reader must be timely, accurate and relevant. Report generation software targets the final requirement by making sure that the information delivered is presented in the way most readily understood by the target reader. History An early report writer was part of Nomad software developed in the 1970s. The evolution of reporting software has a rich h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SHARE (computing)
SHARE Inc. is a volunteer-run user group for IBM mainframe computers that was founded in 1955 by Los Angeles-area users of the IBM 704 computer system. It evolved into a forum for exchanging technical information about programming languages, operating systems, database systems, and user experiences for enterprise users of small, medium, and large-scale IBM computers such as IBM S/360, IBM S/370, zSeries, pSeries, and xSeries. Despite the capitalization of all letters in the name, the official website says "SHARE is not an acronym; it's what we do." Overview A major resource of SHARE from the beginning was the SHARE library. Originally, IBM distributed what software it provided in source form and systems programmers commonly made small local additions or modifications and exchanged them with other users. The SHARE library and the process of distributed development it fostered was one of the major origins of open source software. In 1959 SHARE released the SHARE Operating Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midland, Michigan
Midland is a city in Midland County, Michigan, United States, and its county seat. The population was 42,547 at the 2020 census. It is the principal city of the Midland metropolitan statistical area, part of the larger Saginaw-Midland-Bay City combined statistical area. The city is bordered by Midland Township, though the two are administered separately. Midland is located at the confluence of Chippewa and Tittabawassee rivers in Central Michigan. The city is home to the headquarters of Dow Chemical Company, one of the largest chemical producers in the world, which was founded by Herbert Henry Dow in the city in 1897. The city is also home to Midland Center for the Arts and Northwood University. History By the late 1820s, Midland was established as a fur trading post of the American Fur Company supervised by the post at Saginaw. Here agents purchased furs from Ojibwe trappers. The Campau family of Detroit operated an independent trading post at this location in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parkinson's Disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become more prevalent as the disease progresses. The motor symptoms are collectively called parkinsonism and include tremors, bradykinesia, spasticity, rigidity as well as postural instability (i.e., difficulty maintaining balance). Non-motor symptoms develop later in the disease and include behavior change (individual), behavioral changes or mental disorder, neuropsychiatric problems such as sleep abnormalities, psychosis, anosmia, and mood swings. Most Parkinson's disease cases are idiopathic disease, idiopathic, though contributing factors have been identified. Pathophysiology involves progressive nerve cell death, degeneration of nerve cells in the substantia nigra, a midbrain region that provides dopamine to the basal ganglia, a system invo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wharton School
The Wharton School ( ) is the business school of the University of Pennsylvania, a private Ivy League research university in Philadelphia. Established in 1881 through a donation from Joseph Wharton, a co-founder of Bethlehem Steel, the Wharton School is the world's oldest collegiate business school. It is one of six Ivy League Business Schools, and is the business school which has produced the highest number of billionaires in America and the 45th and 47th U.S. president Donald Trump. The Wharton School awards undergraduate and graduate degrees with a school-specific economics major and concentrations in over 18 disciplines in Wharton's academic departments. The undergraduate degree is a general business degree focused on core business skills. At the graduate level, the Master of Business Administration program can be pursued by itself or along with dual studies leading to a joint degree from its law, engineering, and government schools. In addition to its tracks in accounti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tau Beta Pi
The Tau Beta Pi Association (commonly Tau Beta Pi, , or TBP) is the oldest engineering honor society and the second oldest collegiate honor society in the United States. It honors engineering students in American universities who have shown a history of academic achievement as well as a commitment to personal and professional integrity. Specifically, the association was founded "to mark in a fitting manner those who have conferred honor upon their Alma Mater by distinguished scholarship and exemplary character as students in engineering, or by their attainments as alumni in the field of engineering, and to foster a spirit of liberal culture in engineering colleges". History When academic honor society Phi Beta Kappa sought to restrict its membership to students of the liberal arts in the late 19th century, Edward H. Williams Jr., a member of Phi Beta Kappa and head of the mining department at Lehigh University, formulated the idea of an honor society for those studying technica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Engineering
Mechanical engineering is the study of physical machines and mechanism (engineering), mechanisms that may involve force and movement. It is an engineering branch that combines engineering physics and engineering mathematics, mathematics principles with materials science, to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the List of engineering branches, engineering branches. Mechanical engineering requires an understanding of core areas including mechanics, Analytical dynamics, dynamics, thermodynamics, materials science, design, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), and product lifecycle management to design and analyze manufacturing plants, industrial equipment and industrial machinery, machinery, HVAC, heating and cooling systems, transport systems, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South West Pacific Theatre Of World War II
The South West Pacific theatre, during World War II, was a major theatre of the war between the Allies and the Axis. It included the Philippines, the Dutch East Indies (except for Sumatra), Borneo, Australia, its mandate Territory of New Guinea (including the Bismarck Archipelago) and the Solomon Islands' western part. This area was defined by the Allied powers' South West Pacific Area (SWPA) command. Japanese forces fought primarily against the United States and Australian forces in the South West Pacific theatre. The Philippines, New Zealand, the Netherlands (in the Dutch East Indies), the United Kingdom, and other Allied nations also contributed forces. The South Pacific became a major theatre of the war following the Japanese attack on Pearl Harbor in December 1941. Initially, US war plans called for a counteroffensive across the Central Pacific, but this was disrupted by the loss of battleships at Pearl Harbor. During the First South Pacific Campaign, US forces sought ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
