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Examples of Online Databases:
The adoption of modern technology has resulted in the proliferation of machine readable databases. The National Library of Medicine (USA) designed its MEDLARS which became operational in 1964. Later appeared its online version as MEDLINE. Engineering Index of the Engineers° Joint Council (USA) and Biological Abstracts soon had their corresponding online versions, viz., COMPENDEX and BIOSIS. Yet another very large online database is that of Information Services for Physics and Engineering Communities, called INSPEC (UK) representing the three printed versions of Physics Abstracts, Electrical and Electronic Abstracts and Computers and Control Abstracts.
CA Search and AGRICOLA, the online counterparts respectively of Chemical Abstracts and Bibliography of Agriculture (NAL, USA) are worth mentioning. These are all also devoted to sciences. Of the social sciences, there exist a number of large online databases particularly in economics, psychology, political science and management. For example, PsychINFO is the online version of Psychological Abstracts.
MARC database of the Library of Congress is a good source to search for resources in humanities. It is also worthwhile to know about two full text online databases: one is LEXIS in law and the other is NEXIS that offers several newspapers and business publications.
Printers: Printers: Printers exist in a variety of forms: Line Printers: These have been widely used for many years in large computer installations. They are design
Time Sharing System: With the use multiprogramming, the batch processing can be quite efficient. However, for many jobs, it is desirable to provide a mode in which the user i
What is CAI ? Explain it''s pitfalls.
An example code on LDS
The first report, Report #1, is to be an ordered list of the contents of the database, sorted in ascending order by a major field. Report #1 is to include all of the fields and rec
The divisions which make a macro are: • Declaration of the macro Code of the macro Macro termination directive The assertion of the macro is done the following way: Name Macro [par
User-level threads apply in user-level libraries, before via systems calls, so thread switching does not require to call operating system and to cause interrupt to the kernel. Actu
Execution of a machine instruction: Execution of a machine instruction on modern processors involves a complex sequence of operations with multiple cycles. One instruction cyc
write algotithm and flow chart for largest of 3 numbers
The architecture of the x86 processors forces with the use of memory segments to direct the information, the size of these segments is of 64kb. The cause of being of these segments
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