direct access

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direct access

a method of reading data from a computer file without reading through the file from the beginning as on a disk or drum

direct access

[də′rekt ′ak·ses]
(computer science)

direct access

(1) See Microsoft DirectAccess.

(2) The ability to read or write a specific storage location without having to go through any locations before or after it. Generally synonymous with "random access." Magnetic disks, SSDs, optical data discs and RAM are the primary direct access hardware in a computer.

Access Via Software First
Data are commonly accessed by first scanning an index or by a direct access computation that determines their storage addresses. See index, direct access method and random file.


Early Direct Access
Using a deck of 3x14" magnetic cards, NCR's CRAM was a direct access storage device in the 1960s. By the end of that decade, magnetic disks were becoming mainstream. See CRAM for more details. (Image courtesy of NCR Corporation.)
References in periodicals archive ?
If the state continues down its current path, Strategic Energy and other ESPs like it will be forced to exit the market and direct-access customers will become unwilling participants in the state government's ever-growing liability from purchasing power.
RealTick represents a powerful data and direct-access trading platform that provides traders with all the tools necessary to make critical trading decisions.
TradeStation 6 is an electronic trading platform that enables clients to design, test and monitor their own custom trading strategies and then automate them with direct-access order execution.
The integration effort was a very significant development process for us and we are very happy to be a part of the E*TRADE initiative into the direct-access market segment.
The company's top ranking by Barron's put it ahead of Instinet's ProTrader (Nasdaq:INET), Charles Schwab's StreetSmart Pro (NYSE:SCH), E*Trade's WebStreet Direct (NYSE:ET), Ameritrade's TradeCast Elite (Nasdaq:AMTD), and seven other direct-access brokers.
We are particularly excited to provide to our futures customers both futures data and integrated direct-access futures trading capability with our June 27th launch.
This is a revolutionary idea for the direct-access market and is aimed towards the professional trader.
Our partnership with Watley, the clear leader in direct-access trading technology, is very logical for us.
com), is about to begin integration testing of E*TRADE Pro, a direct-access trading product developed with E*TRADE Securities, Inc.
com), today announced that its new JAVA-based direct-access trading software is in the final optimization stages for Apple's (NASDAQ:AAPL) new operating system, Mac OS X.
First and foremost, TradeStation Pro is the foundation of the company's intelligent, direct-access trading platform that will be offered to the active trader market once the pending merger with OnlineTrading.
TM), a pioneer provider of integrated mixed-signal design and test automation solutions, today announced the TDS_SimValidator(TM) Direct-Access Scan (DAS) option enabling increased performance of scan-based simulation for large system-on-chip (SoC) designs.