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DFD <Data flow diagram>
Full spelling: Data Flow Diagram
Field:
IT industry > system development > DFD
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The figure which shows the data flow between the systems. Occurrence absorption between the systems which it processes & accumulates, connecting the data with the arrow which shows the data flow, it draws up. There is a merit such that the place where it is easy to streamline due to can be discovered easily.
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DFS <Dispersed file system>
Reading: D f s
Full spelling: Distributed File System
Field:
Windows > File system > DFS |
Dispersed file system. By the fact that it handles the folder group which is on the plural computers asthe function which simply from the joint ownership folder it tries to be able to access the folder group.
Structure of the actually folder dispersing by the fact that the hypothetical structure which differs is assembled, like whether the file and the folder which exist exist quite in one tree structure of, it can show.
Because of this, the file with respect to network it becomes possible to duplicate the hypothetical tree which it handled same as the file on the local machine, in addition assembled |
DGPS
Reading: D Gee tweet the s
Full spelling: Differential GPS
Field:
IT and society > GPS/GIS > DGPS
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| Making use of the radio wave of the FM broadcast which the standard bureau where position understands dispatches, GPS (all the terrestrial determination systems) correcting the error of the measurement result, the technology which raises precision. The measurement with GPS at standard bureau is done, the result which is measured the gap of actual position and the position where it was calculated with GPS by transmitting with the ground wave of medium frequency and FM broadcast etc, due to the signal from the GPS satellite is revised. With usual GPS the error of 100m occurs, but error is lightened to 5m in general by DGPS. However, the error of 100m is something which occurs because noise is mixed intentionally security as a reason in GPS which the Department of Defense offered, at the presently noise mixture becomes unable to do DGPS is not adopted and the [te] error is settled to 10m. |
DHCP
Reading: The D h sea tweet
Full spelling: Dynamic Host Configuration Protocol
Field:
Network technology > TCP/IP > DHCP
LAN > Network management > DHCP |
| In the computer which is connected to Internet temporarily, the protocol which allots necessary information such as IP address automatically. IP address and the subnetwork mask of the gateway server and the DNS server and the range etc of the IP address which it is possible to allot to the client are set byuse expedient such as dial rise and offer these items of information to the computer which is accessed. When the client finishes communication, you collect address automatically, allot to the other computer. When DHCP is used, in setting of network it can connect to Internet simply even with the detailed user, in addition, as for the network manager it is |
DHTML <Dynamic HTML>
Alias:
Dynamic HTML
Field:
Expression of information > markup language > HTML > DHTML
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The extended specification of HTML which can be able to give conversational characteristic easily in the Web page. There being the movement without using the technology whose processing is heavy by in the HTML document imbedding the script with JavaScript and VBScript, capacity of plug in and ActiveX control and the Java applet etc to be large, it is possible to draw up the Web page which had conversational characteristic.of the NETSCAPE Communications corporation it was loaded onto Internet Explorer of 4.0 and the Microsoft corporation 4.0 for the first time. As for both specifications the interchangeable part it is many, but because there is also a non interchangeable part, standardization group W3C standard specification is in the midst of deciding.
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