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Mapping out the DBMS Territory
DATA BASE Mapping out the DBMS territory by Dr. George Schussel, stant both in terms of new product environment and should include the COP announcements and users since following: 1975. Of companies already using a • A DBMS offering data indepen Data base and data management DBMS product, 85 percent of these dence products have changed dramatically are not CODASYL, so it seems clear that CODASYL DDL and DML • A data dictionary defining and in the last several years. New hard controlling the data environment ware and software technologies standards will not be adopted by the marketplace, at least in their cur • A query language allowing user have greatly changed the character personnel access to the data base and number of products available. rent form. Just as the oil crisis hit the auto Mainframe DBMS • A report-generating system al makers, the "productivity crisis" The market for full-function trans lowing simplified programming has hit the software suppliers mar action processing DBMS, with their generation of reports ket. required high-level technical data • A screen mapper allowing gener base administration gurus and large ation of data entry screens by a In the 1970s there were no more simple example process than two dozen widely marketed mainframes, is still active but ex DBMS product lines. Non-IBM DP tremely competitive. Successful • A user language that is high -level, easy to use and an alternative to shops, using equipment such as vendors of this type of product have procedural languages such as Univac, Honeywell or Burroughs, COBOL and PL/l. simply took the DBMS offered by the hardware vendor. -
AIX® Version 6.1 Performance Toolbox Guide Limiting Access to Data Suppliers
AIX Version 6.1 Performance Toolbox Version 3 Guide and Reference AIX Version 6.1 Performance Toolbox Version 3 Guide and Reference Note Before using this information and the product it supports, read the information in Appendix G, “Notices,” on page 431. This edition applies to AIX Version 6.1 and to all subsequent releases and modifications until otherwise indicated in new editions. (c) Copyright AT&T, 1984, 1985, 1986, 1987, 1988, 1989. All rights reserved. Copyright Sun Microsystems, Inc., 1985, 1986, 1987, 1988. All rights reserved. The Network File System (NFS) was developed by Sun Microsystems, Inc. This software and documentation is based in part on the Fourth Berkeley Software Distribution under license from The Regents of the University of California. We acknowledge the following institutions for their role in its development: the Electrical Engineering and Computer Sciences Department at the Berkeley Campus. The Rand MH Message Handling System was developed by the Rand Corporation and the University of California. Portions of the code and documentation described in this book were derived from code and documentation developed under the auspices of the Regents of the University of California and have been acquired and modified under the provisions that the following copyright notice and permission notice appear: Copyright Regents of the University of California, 1986, 1987, 1988, 1989. All rights reserved. Redistribution and use in source and binary forms are permitted provided that this notice is preserved and that due credit is given to the University of California at Berkeley. The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission. -
Next Generation Tool
INSIDE! COMPUTING TRENDS: WHAT ARE TODAY'S CIO'S LOOKING FOR? $7.00 U.S. INTERNATIONAL ® SPECTRUMSPECTRUMTHE BUSINESS COMPUTER MAGAZINE SEPT/OCT 2002 • AN IDBMA, INC. PUBLICATION NextNext GenerationGeneration ToolTool XXCreateCreate OneOne CodeCode BaseBase forfor AnyAny NetworkNetwork Configuration,Configuration, AnyAny OperatingOperatingTT System,System, andand AnyAny DataData SourceSource —— MultiValueMultiValue andand RelationalRelational —— WithoutWithoutTT BeingBeing aa JavaJava Expert!Expert! Come in from the rain Featuring the UniVision MultiValue database - compatible with existing applications running on Pick AP, D3, R83, General Automation, Mentor, mvBase and Ultimate. We’re off to see the WebWizard Starring a “host” centric web integration solution. Watch WebWizard create sophisticated web-based applications from your existing computing environment. Why a duck? Featuring ViaDuct 2000, the world’s easiest-to-use terminal emulation and connectivity software, designed to integrate your host data and applications with your Windows desktop. Caught in the middle? With an all-star cast from the WinLink32 product family (ViaOD- BC, ViaAPI for Visual Basic, ViaObjects, and mvControls), Via Sys- tems’ middleware solutions will entertain (and enrich!) you. Appearing soon on a screen near you. Advanced previews available from Via Systems. Via Systems Inc. 660 Southpointe Court, Suite 300 Colorado Springs, Colorado 80906 Phone: 888 TEAMVIA Fax: 719-576-7246 e-mail: [email protected] On the web: www.via.com The Freedom To Soar. With jBASE – the remarkably liberating multidimensional database – there are no limits to where you can go. Your world class applications can now run on your choice of database: jBASE, Oracle, SQL Server or DB2 without modification and can easily share data with other applications using those databases. -
Basic Electronics.COM -- Internet Guide to Electronics
BASIC ELECTRONICS.CD INFO Best Viewed at 800X600 Last Updated: January 10, 2003 Previously Internet Guide to Electronics Site. Welcome! This website allows you to NEW & NEWS: browse the subject of ELECTRONICS. If you are just starting the learning journey, I hope Your Projects you'll make use of the simple nature and graphical content of this site. Feel free to look Basic Electronics around. Don't worry -- there are no tests at the FAQ end of the day. If you would like to contact me regarding this site, email me at [email protected] John Adams - Author ( Place mouse over symbol to see selection in LCD screen then view explanation in the Email Me browser's status window. Non-Javascript browsers, scroll down for link explanations.) THEORY|APPLY IT!|COMPONENTS|MESSAGE BOARD|REF/DATA/TOOLS BOOKS/MAGs|LECTRIC LINKS|BASIC ELECTRONICS.CD INFO ABOUT|EMAIL|WHATS NEW! THEORY Gain the basic understanding of electronic principles that you will be making use of later. This includes Ohm's Law, Circuit Theory, etc. APPLY IT! Putting the theory to work. This includes sections on how to solder, multimeters, and of course, PROJECTS! COMPONENTS Learn about various electronics components. MESSAGE BOARD Post your basic electronics related questions here for others to answer and read. REFERENCE, DATA AND COOL TOOLS! Resistor color code info, plenty of calculators, chart, electronics data and other cool tools! VERY POPULAR PAGE BOOKS/MAGs A list of books and magazines relating to the subject of electronics. Includes direct links to amazon.com for ordering online. LECTRIC LINKS A list of top-rated Electronics-related sites on the Web. -
Personal Computing
Recent History of Computers: Machines for Mass Communication Waseda University, SILS, Science, Technology and Society (LE202) The communication revolution ‚ In the first period of the history of computers, we see that almost all development is driven by the needs and the financial backing of large organizations: government, military, space R&D, large corporations. ‚ In the second period, we will notice that the focus is now shifting to small companies, individual programers, hobbyists and mass consumers. ‚ The focus in the first period was on computation and control. In the second period, it is on usability and communication. ‚ A mass market for computers was created, through the development of a user-friendly personal computer. Four generations of computers 1st 2nd 3rd 4th 5th Period 1940s–1955 1956–1963 1964–1967 1971–present ? Tech- vacuum transistors integrated micro- ? nology tubes circuits processors Size full room large desk sized desk-top, ? (huge) machine hand-held Software machine assembly operating GUI ? language language systems interface The microprocessor ‚ In 1968, the “traitorous seven” left Fairchild Semiconductor to found Intel. ‚ In 1969, Busicom, a Japanese firm, commissioned Intel to make a microprocessor for a handheld calculator. ‚ This lead to the Intel 4004. Intel bought the rights to sell the chip to other companies. ‚ Intel immediately began the process of designing more and more powerful microchips. Schematic: The Intel 4004 ‚ This has lead to computers small enough to fit in our hands. Consumer electronics ‚ The microprocessor made it possible to create more affordable consumer electronics. ‚ The Walkman came out in 1979. Through the 1980s video players, recorders and stereos were marketed. -
Do-It-Yourself Devices: Personal Fabrication of Custom Electronic Products
Do-It-Yourself Devices Personal Fabrication of Custom Electronic Products David Adley Mellis SB Mathematics Massachusetts Institute of Technology, June 2003 MA Interaction Design Interaction Design Institute Ivrea, June 2006 SM Media Arts and Sciences Massachusetts Institute of Technology, September 2011 Submitted to the Program in Media Arts and Sciences School of Architecture and Planning in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Media Arts and Sciences at the Massachusetts Institute of Technology September 2015 © 2015 Massachusetts Institute of Technology. All right reserved. Author: David A. Mellis Program in Media Arts and Sciences August 7, 2015 Certified by: Mitchel Resnick LEGO Papert Professor of Learning Research Program in Media Arts and Sciences Accepted by: Pattie Maes Academic Head Program in Media Arts and Sciences Do-It-Yourself Devices Personal Fabrication of Custom Electronic Products David Adley Mellis Submitted to the Program in Media Arts and Sciences School of Architecture and Planning on August 7, 2015 in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Media Arts and Sciences at the Massachusetts Institute of Technology Abstract Many domains of DIY (do-it-yourself) activity, like knitting and woodworking, offer two kinds of value: the making process itself and using the resulting products in one’s life. With electronics, the sophistication of modern devices makes it difficult to combine these values. Instead, when people make electronics today, they generally use toolkits and other prototyping processes that aren’t well suited to extended use. This dissertation investigates digital fabrication (of both electronic circuit boards and enclosures) as an alternative approach to DIY electronics, one that can support individuals in both making devices and using them in their daily lives. -
Objex, Inc. Product Overview April 2015
WHERE COMMON SENSE MEETS UNCOMMON INGENUITY ObjEx, Inc. Product Overview April 2015 ObjEx INC PO Box 25608 Scottsdale, AZ 85255-5608 Tel: (480) 588-7776 http://www.obj-ex.com ObjEx, Inc. Product Overview Table of Contents Contents TABLE OF CONTENTS I OVERVIEW 1 PACKAGED SOFTWARE 1 SERVICES 2 OBJEX XMLQUERY 4 OBJEX XMLPUBLISHER 5 OBJEX PROGRAM CALL 6 ABOUT OBJEX 7 2015 ObjEx, Inc. Page i ObjEx, Inc. Product Overview Overview ObjEx was founded in 1996 by former Cullinet and CA executives and employees who have more than 65 years of IDMS experience and 20 years as IDMS Integrators. We provide software and services to our clients which include many large organizations. Packaged Software Our packaged software is conceived and developed as a result of our integration experiences related to Service Oriented Architecture, cloud computing calls to and from IDMS, trigger- based data publishing, and replication. ObjEx products are focused on Service Oriented Architecture (SOA) and are designed to participate within the latest n-tier architectures. ObjEx has been used to: Extend existing IDMS systems with new modern application components either direct client/server or through SOA, all in one database. Allow existing IDMS applications to call out to internal and external web services. Provide modern applications the ability to use existing IDMS DC-Cobol and ADSO programs as web services. This allows the reuse of business rules without the hassles of screen scraping. Push IDMS data to non-mainframe applications without altering IDMS programs. The products are useful for ERP and warehouse integration, data replication to operational data stores, and data warehousing feeds. -
LABORATORY for COMPUTER SCIENCE'progress REPORT Ig JULY 1/3 1986-JUNE 1981(U) MASSACHUSETTS INST of TECH CAMBRIDGE LAB for COMPUTER SCIENCE
-R127 586 LABORATORY FOR COMPUTER SCIENCE'PROGRESS REPORT ig JULY 1/3 1986-JUNE 1981(U) MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR COMPUTER SCIENCE. M L DERTOUZOS 01 APR 82 UNCLASSIFIEDEhE0 LCS-PR-i8 00 N9014-75-C-8661 0 0 0 1iEF/G 9/2 N EhhhhhhhhhhhhE EhhhhhhhhhhhhE EhhhhhhhmhhhhE EhhhhhhhhhhhhI EhhhhhhohmhhhE ".2 111.0 t IL8125 IL .2 j'Ill-'liii 111.25 111. ~lI MICROCOPY RESOLUTION TEST CHART NATIONAL BUREAU OF SIANDARDS-1963-A a-, MASSACHUSETTS LABORATORY FOR INSTITUTE OF COMPUTER SCIENCE TECHNOLOGY PROGRESS REPORT 18 July 1980- June 1981 1i MAY 2 1.83 CL- Prepared for the Defense Advanced Research Projects Agency 545 TECHNOLOGY SQUARE. CAMBRIDGE, MASSACHUSETTS 02139 83 04 29 018 ,' -.^. %. '" * ' 4. .-,. -i .- - k 7 . - . -. _. - .. .. .. - • . ... ..• . Unclassified "ECUtITY CLASSIFICATION OF THIS PAGE (When Data Entered) REPOT DCUMETATONPGE READ INSTRUCTIONS REPEN RTATIN OCU P GEBEFORE COMPLETING FORM 1. REPORT NUMBER 2. G 3. RECIPIENT'S CATALOG NUMBER LCS Progress Report 18 8'k, 4. TITLE (and Subtitle) S. TYPE OF REPORT & PERIOD COVERED Laboratory for Computer Science DARPA/DOD, Progress Progress Report 18 Report 7/80 - 6/81 . July 1980 - June 1981 6. PERFORMING ORG. REPORT NUMBER LCS-PR 18 7. AUTHOR(s) 8. CONTRACT OR GRANT NUMBER(*) *Laboratory for Computer Science - Michael L. Dertouzos N00014-75-0661 9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJECT, TASK - Laboratory for Computer Science AREA & WORK UNIT NUMBERS Massachusetts Institute of Technology .. 545 Tech. Sq. Cambridge, MA 02139 1i. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE -Defense Advanced Research Projects Agency April 1, 1983 * Information Processing Techniques Office 13. -
News on Educational Use of Computers Among Michigan Colleges and Universities
DOCUMENT RESUME ED 097 862 IR 001 204 AUTHOR Zinn, Karl, Ed. TITLE News on Educational Use of Computers Among Michigan Colleges and Universities. INSTITUTION Michigan Univ., Ann Arbor. Center for Research on Learning and Teaching. PUB DATE Jul 74 NOTE 74p.; Special Summer Issue on /CM 74 JOURNAL CIT On-Line; v3n4 Jul 1974 EDRS PRICE MF-$0.75 MC-$3.15 PLUS POSTAGE DESCRIPTORS * Computer Assisted Instruction; Computer Oriented Programs; *Computer Programs; *Computers; Conference Reports; *Mathematics; *Sciences IDENTIFIERS MERIT Computer Network; *Michigan ABSTRACT A special issue of the journal "On Linen is devoted to reporting the 1974 Instructional Computing inMichigan conference. The conference was divided into numerous sessions, and there are individual reports summarizing the activities and papers of each session. The sessions reported are on the instructionalcomputing aspects of mathematics, physical and environmentalsciences, behavioral and social sciences, arts and music, community colleges, college teaching and learning activities, terminals andcommunication facilities, and the MERIT Computer Network. In addition, a feyof the papers presented at the mathematicsand sciences sessions are reprinted in this issue. (VH) Volume Nurnbcr 4 JuZy la74 NEWS ON EDUCATIONAL USE OF COMPUTERS AMONG MICHIGAN COLLEGES AND UNIVERSITIES 101611111E Special Summer Issue on 1CM 74 SPECIAL REPORTS Page ICM 74 Table of Contents Int oduction to the 1CM 74 Conference Record K. Zinn 1 Mathematics Reports by H. Dershem, R. DeVinney, L. Allen and A. Falk 3 Physical and Environmental Sciences Reports by J. Moore, D. Emerson, J. Herman, J. Clime, R. Rosenberg, J. Forsythe and N. Eick 14 Behavioral and Social Sciences Reports by D. -
4010, 237 8514, 226 80486, 280 82786, 227, 280 a AA. See Anti-Aliasing (AA) Abacus, 16 Accelerated Graphics Port (AGP), 219 Acce
Index 4010, 237 AIB. See Add-in board (AIB) 8514, 226 Air traffic control system, 303 80486, 280 Akeley, Kurt, 242 82786, 227, 280 Akkadian, 16 Algebra, 26 Alias Research, 169 Alienware, 186 A Alioscopy, 389 AA. See Anti-aliasing (AA) All-In-One computer, 352 Abacus, 16 All-points addressable (APA), 221 Accelerated Graphics Port (AGP), 219 Alpha channel, 328 AccelGraphics, 166, 273 Alpha Processor, 164 Accel-KKR, 170 ALT-256, 223 ACM. See Association for Computing Altair 680b, 181 Machinery (ACM) Alto, 158 Acorn, 156 AMD, 232, 257, 277, 410, 411 ACRTC. See Advanced CRT Controller AMD 2901 bit-slice, 318 (ACRTC) American national Standards Institute (ANSI), ACS, 158 239 Action Graphics, 164, 273 Anaglyph, 376 Acumos, 253 Anaglyph glasses, 385 A.D., 15 Analog computer, 140 Adage, 315 Anamorphic distortion, 377 Adage AGT-30, 317 Anatomic and Symbolic Mapper Engine Adams Associates, 102 (ASME), 110 Adams, Charles W., 81, 148 Anderson, Bob, 321 Add-in board (AIB), 217, 363 AN/FSQ-7, 302 Additive color, 328 Anisotropic filtering (AF), 65 Adobe, 280 ANSI. See American national Standards Adobe RGB, 328 Institute (ANSI) Advanced CRT Controller (ACRTC), 226 Anti-aliasing (AA), 63 Advanced Remote Display Station (ARDS), ANTIC graphics co-processor, 279 322 Antikythera device, 127 Advanced Visual Systems (AVS), 164 APA. See All-points addressable (APA) AED 512, 333 Apalatequi, 42 AF. See Anisotropic filtering (AF) Aperture grille, 326 AGP. See Accelerated Graphics Port (AGP) API. See Application program interface Ahiska, Yavuz, 260 standard (API) AI. -
A Survey of Distributed File Systems
A Survey of Distributed File Systems M. Satyanarayanan Department of Computer Science Carnegie Mellon University February 1989 Abstract Abstract This paper is a survey of the current state of the art in the design and implementation of distributed file systems. It consists of four major parts: an overview of background material, case studies of a number of contemporary file systems, identification of key design techniques, and an examination of current research issues. The systems surveyed are Sun NFS, Apollo Domain, Andrew, IBM AIX DS, AT&T RFS, and Sprite. The coverage of background material includes a taxonomy of file system issues, a brief history of distributed file systems, and a summary of empirical research on file properties. A comprehensive bibliography forms an important of the paper. Copyright (C) 1988,1989 M. Satyanarayanan The author was supported in the writing of this paper by the National Science Foundation (Contract No. CCR-8657907), Defense Advanced Research Projects Agency (Order No. 4976, Contract F33615-84-K-1520) and the IBM Corporation (Faculty Development Award). The views and conclusions in this document are those of the author and do not represent the official policies of the funding agencies or Carnegie Mellon University. 1 1. Introduction The sharing of data in distributed systems is already common and will become pervasive as these systems grow in scale and importance. Each user in a distributed system is potentially a creator as well as a consumer of data. A user may wish to make his actions contingent upon information from a remote site, or may wish to update remote information. -
Ascii, Baudot, and the Radio Amateur
ASCII, BAUDOT AND THE RADIO AMATEUR George W. Henry, Jr. K9GWT Copyright © 1980by Hal Communications Corp., Urbana, Illinois HAL COMMUNICATIONS CORP. BOX365 ASCII, BAUDOT, AND THE RADIO AMATEUR The 1970's have brought a revolution to amateur radio RTTY equipment separate wire to and from the terminal device. Such codes are found in com and techniques, the latest being the addition of the ASCII computer code. mon use with computer and line printer devices. Radio amateurs in the Effective March 17, 1980, radio amateurs in the United States have been United States are currently authorized to use either the Baudot or ASCII authorized by the FCC to use the American Standard Code for Information serial asynchronous TTY codes. Interchange(ASCII) as well as the older "Baudot" code for RTTY com munications. This paper discusses the differences between the two codes, The Baudot TTY Code provides some definitions for RTTY terms, and examines the various inter facing standards used with ASCII and Baudot terminals. One of the first data codes used with mechanical printing machines uses a total of five data pulses to represent the alphabet, numerals, and symbols. Constructio11 of RTTY Codes This code is commonly called the Baudot or Murray telegraph code after the work done by these two pioneers. Although commonly called the Baudot Mark Ull s,.ce: code in the United States, a similar code is usually called the Murray code in other parts of the world and is formally defined as the International Newcomers to amateur radio RTTY soon discover a whole new set of terms, Telegraphic Alphabet No.