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There are currently 81 names in this directory
2-digit-year format
A format in which a year (such as 1995) is represented as two digits (95), only practical if all dates are within the same century; for example, this format cannot distinguish between 1995 and 2095.

20th century
The period of time from January 1, 1901 through December 31, 2000.

21st century
The period of time from January 1, 2001 through December 31, 2100.

4-digit-year format
A format in which a year (such as 1995) is represented as four digits (1995). This format allows for dates to span more than one century (1900, 2000, etc.). For example, it can distinguish between 1995 and 2095. Computers and programs that use the four-digit-year format will have no Year 2000 problem.

AFY2KWG
Air Force Year 2000 Working Group. A U.S. Air Force group working on Y2K compliance. The AFY2KWG identified 108 data elements which needed to be checked for system readiness.

Air Force Year 2000 Working Group
(AFY2KWG). A U.S. Air Force group working on Y2K compliance. The AFY2KWG has identified 108 data elements which must be checked for system readiness.

backup and recovery test
A test to verify that a system can be reestablished after a failure. It is done by backing up to a point in the processing cycle before any errors occurred and reprocessing all transactions that occurred after that point .

baseline test
A test performed before any changes are made to a system. The results are compared with performance of the system after changes are made.

boundary test
A test of how a program works within a range of two dates or other values.

CCYY
A four-digit-year format in which two digits (CC) represent the century and two digits (YY) represent the year. Example: 1997, 2014.

century
A hundred consecutive years. The first century AD is from year 1 to year 100 AD. Therefore, technically, the 20th century includes years 1901-2000, and the 21st century began January 1, 2001.

century byte
The high-order byte of a field which contains the two century digits of a four-digit year; for example, 19 in 1997, 20 in 2001.

certification test
A test to establish that an application works the way it should.

change control
The tracking and management of changes made to a program.

clean management
Careful management of a system which has been declared Y2K compliant to ensure that any hardware, software, or network components which are added or changed will be tested for compliance first.

cosmetic
For appearances only. Some systems have dates that are for human eyes only, and that are not used by the computer in its processing, such as a date on a display panel.

critical date
The date that a system would experience software failure due to Year 2000 problems, if they were not resolved beforehand.

cuntm
See you in the morning

data aging
Changing the value of a date to represent a point in the future.

date element
The data the computer uses to represent a date.

date field
The data that represent a date to the computer.

end-to-end test
A test of the ability of a system to transmit data to a receiving system through an intermediary.

failure horizon
The time limit within which a system failure is anticipated.

field expansion
A Year 2000 conversion method that works by expanding the size of the date field; usually this means expanding a two-digit-year field to a four-digit-year field.

fix on failure
(FoF). A strategy for dealing with Y2K problems by assuming that some systems will fail, and planning to fix them on, or after, failure.

fixed window
A method of indicating the century (high-order digits) of a two-digit-year based on a fixed pivot point, which allows for a certain window of time to be designated for each century. For example, if 1985 is the pivot point, years 85 through 99 would have a century value of 19, and 00 through 84 would have a century value of 20. See also sliding window.

FoF
Fix on Failure. A strategy for dealing with Y2K problems by assuming that some systems will fail, and planning to fix them on, or after, failure.

four-digit-year format
A format in which a year (such as 1995) is represented as four digits (1995). This format allows for dates to span more than one century (1900, 2000, etc.). For example, it can distinguish between 1995 and 2095. Computers and programs that use the four-digit-year format will have no Year 2000 problem.

future date test
A test of a program by simulating a future date to make sure the program will be able to function on that date without problems.

G8
Group of Eight. A group of leaders from eight countries (the United States, Britain, Germany, Japan, France, Italy, Canada, and Russia) committed working on the Year 2000 problem. Among its actions, the Group of Eight committed over $16 million to the World Bank Trust Fund and the Organization for Economic Cooperation and Development to help international institutions combat the Y2K bug.

Gregorian calendar
The calendar used in most countries of the world, which has 12 months and 365 days a year (except for leap years). It is a modified version of the Julian calendar, and was introduced by Pope Gregory XIII in 1582. (See leap year.)

Group of Eight
(G8). A group of leaders from eight countries (the United States, Britain, Germany, Japan, France, Italy, Canada, and Russia) committed working on the Year 2000 problem. Among its actions, the Group of Eight committed over $16 million to the World Bank Trust Fund and the Organization for Economic Cooperation and Development to help international institutions combat the Y2K bug.

idts
i don't think so

impact date
The date that a system may experience software failure due to Year 2000 problems.

Julian calendar
The Roman calendar introduced by Julius Caesar in 45 B.C.

leap year
A year that has 366 days instead of 365; in a leap year, February has 29 days instead of 28. Leap years fall on any year that either can be evenly divided by 400 or evenly divided by 4 and not evenly divided by 100. For example, the year 2000 is a leap year, but 1900 is not.

Lilian date
The number of days since October 14, 1582, the date of adoption of the Gregorian Calendar. October 15, 1582 is Lilian day 1, October 16, 1582 is Lilian day 2, and so on. This method of time reckoning is named for Aloysius Lilius, an advisor to Pope Gregory XIII. Lilius and his brother constructed the Gregorian calendar.

lines of code
(LOC). A measure of the size of a program.

LOC
Lines of Code. A measure of the size of a program.

millennium
One thousand years. Because the first year of the first millennium AD was 1 AD rather than 0 AD, the first year of the second millennium was 1001 AD. Therefore, in spite of all the fuss about the Year 2000, the next millennium will not actually start until January 1, 2001.

millennium bug
The Y2K problem; an electrical or other system defect related to the date 2000 AD. The problem was created by the programming of computers with two-digit date fields, such as 99 instead of 1999. The year 2000 in a two-digit date field reads 00, which the computer may interpret as 1900. The computer's confusion about the date can cause processing problems.

mission-critical system
A system that is critical to the functioning of an organization and the accomplishment of its mission.

MM
The Roman numeral designation for the Year 2000.

NERC
North American Electric Reliability Council. The agency charged by the Department of Energy with handling Y2K issues in the electric utility industry.

Network Reliability and Interoperability
(NRIC). A body concerned with getting the telecom industry ready for the Year 2000 problem.

North American Electric Reliability Coun
(NERC). The agency charged by the Department of Energy with handling Y2K issues in the electric utility industry.

NRIC
Network Reliability and Interoperability Council. A body concerned with getting the telecom industry ready for the Year 2000 problem.

parallel test
A comparison of the results of a process run concurrently in the old and new systems.

pivot year
In windowing technology, the year at which two-digit dates that come before are considered 19XX and dates that come after are considered 20XX. The pivot year itself must also be defined as either 19XX or 20XX.

PMP
Project Management Plan. A detailed description of an organization’s strategies for resolving Y2K issues.

point-to-point test
A test of the ability of a system to transmit data directly to another system.

production environment
The system environment in which an organization’s data processing is accomplished.

Project Management Plan
(PMP). A detailed description of an organization’s strategies for resolving Y2K issues.

remediation contingency plan
A plan which will go into effect if an institution’s Year 2000 readiness plan is not completed in time.

rolling window
A technique for determining the century (high-order digits) of a year that is represented in two-digit format, which is a variation on the fixed window remediation technique. In this method, the pivot point changes when the system year (usually the current year) changes. It is also called the sliding window method. (See sliding window.)

sliding window
A technique for determining the century (high-order digits) of a year that is represented in two-digit format, which is a variation on the fixed window remediation technique. In this method, the pivot point changes when the system year (usually the current year) changes. A 100-year window is designated, spanning two centuries. For example, if the pivot year is 70 during 1998, then during 1999 it will be 71. If the window is set at 35 future years (1971-2005) and 64 past years (1906-1969), dates in the range 00 through 05 will have the century field 20 because they fall into the future window. Dates in the range 06 through 99 fall into the past window and will have the century field 19.

Taskforce 2000
The UK's industry-funded Y2K awareness body.

TEOTEAWKI
The End Of The Economy As We Know It. A feared result of the Y2K computer problem, less disastrous than TEOTWAWKI (The End Of The World As We Know It).

TEOTWAWKI
The End Of The World As We Know It. A feared result of the Y2K computer problem.

thrival
Beyond survival is the idea of thriving or prospering in the new millennium. In addition to survival meetings for Y2K, there is a movement in some communities to have ÒthrivalÓ meetings.

two-digit-year format
A format in which a year (such as 1995) is represented as two digits (95), only practical if all dates are within the same century; for example, this format cannot distinguish between 1995 and 2095.

unit test
A test of one application to see if remediation efforts were successful. The unit test does not test how well the application will work with other applications.

Y2K baseline inventory
An initial inventory of system data using 54 of 108 data elements identified by the Air Force Year 2000 Working Group.

Y2K Challenge
The challenge to an institution to respond to the Y2K problem.

Y2K compliant
Tested and proven capable of correct identification, manipulation, and calculation using dates outside the range of 1900-1999; or not dependent on dates in order to function.

Y2K event horizon
The year a system is expected to experience Year 2000-related problems as a result of date projections.

Y2K noncompliant
Tested and proven not capable of reliably using dates outside the range of 1900-1999.

Y2K OK
Ready for the Year 2000.

Y2K readiness plan
A detailed plan for bringing an organization’s system into Y2K compliance.

Y2K ready
This expression has been used with several different, and contradictory, meanings: 1. Y2K compliant. 2. Ready for Y2K, but not necessarily Y2K compliant; implies the organization has contingency plans in case computer systems fail. 3. Able to handle date manipulation and store four-digit dates, but not requiring the user to enter a four-digit year.

Y2P
Year 2000 Problem. In the 1980s and before, most computer programs were designed to store only the last two digits of the years on all dates. When the Year 2000 comes, these programs will show dates of 00, which may be interpreted the same as 1900. This discrepancy may cause widespread problems, especially in the large computer systems used in government and big industries. Efforts to correct the problem before 2000 may be too late.

Year 2000 compliant
Tested and proven capable of correct identification, manipulation, and calculation using dates outside the range of 1900-1999; or not dependent on dates in order to function.

Year 2000 noncompliant
Tested and proven not capable of reliably using dates outside the range of 1900-1999.

Year 2000 Problem
(Y2P). In the 1980s and before, most computer programs were designed to store only the last two digits of the years on all dates. When the Year 2000 comes, these programs will show dates of 00, which may be interpreted the same as 1900. This discrepancy may cause widespread problems, especially in the large computer systems used in government and big industries. Efforts to correct the problem before 2000 may be too late.

Year 2000 readiness plan
A detailed plan by which an organization will bring its computer systems into Year 2000 compliance. The phases of such a plan must include planning, assessment, remediation, testing, further corrections as necessary, and testing again until the system is fully Y2K compliant.

Year 2000 remediation
The process of revising a system to make it Year 2000 compliant.

Year 2000 scoping
An assessment of the time, money, and other resources necessary to bring all systems in an enterprise into Year 2000 compliance.

Year 2000 transition
The revision of a system and its programs so it can correctly process dates outside the range of 1900-1999.

YMARK2000
A testing tool for Year 2000 compliance from NSTL.

YY
A two-digit-year date format; for example, 95 for 1995.

YYYY
A four-digit-year date format; for example, 1995 for 1995.


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