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... XMark Instead of storing the entire data as a single, large XML instance, it is more natural in a relational database to store the data in tables representing the different entities in the data ... Tatarinov, E Viglas, K Beyer, J Shanmugasundaram, E Shekita Storing and Querying Ordered XML Using a Relational Database System SIGMOD 2002 References [21] M Yoshikawa and T Amagasa XRel: a path-based ... save space in XML indexes, although it adds a JOIN in case of wildcard and //-axis queries Conclusions This paper introduces techniques for indexing XML instances stored in a relational database...

Ngày tải lên: 07/03/2014, 14:20

... OleDBDataAdapter1, which was created by using the ? in the Select statement of the data adapter Then Dataset1 is cleared of its data with the Clear method Finally, DataSet1 is refilled with data ... Me.OleDbDataAdapter1.Fill(Me.DataSet1) End Sub Note There is one big difference here between an OleDbDataAdapter and a SqlDataAdapter Whereas the OleDbDataAdapter takes a ? to specify a parameter within the Select statement, ... data based off the value in txtCustLimit, using the data adapter Listing 1.2 frmHowTo1_2.vb: Submitting a Parameter to a DataAdapter and Filling the Dataset Private Sub btnLoadList_Click(ByVal sender...

Ngày tải lên: 21/01/2014, 12:20

... Diseases Institute (IDI) in Kampala, Uganda, is a centre of excellence for HIV clinical care in the country, and maintains a large observational clinic database and a nested research cohort database ... patients in research cohort and same 559 patients in routine clinic databases; and (Comparison B) 559 patients in research cohort database versus 1233 patients in routine clinic database Research ... in the 24 months after ART initiation among the same 559 patients in the research cohort and routine clinic databases, and the 1233 patients in the routine clinic database who had initiated ART...

Ngày tải lên: 20/06/2014, 08:20

... protocol stack, the overhead data added at each layer is placed in a header, or, in the case of the data link layer, a header and trailer This procedure is known as encapsulation, and the headers and ... CSUs contain additional facilities that are used to detect and isolate line and equipment problems 2.2 Making a Data Call Consider a host (Host A) in a multilocation company that needs a data file ... terminals (often characterized as dumb terminals) Server: A data processing device that stores data, organizes and maintains databases, and delivers copies of data files to clients, on demand With the...

Ngày tải lên: 27/06/2014, 00:20

... mediated analog telephone lines), so that a flag character or an escape character within the IP datagram payload shall not interrupt transmission, PPP employs character stuffing to change the meaning ... frame that encapsulates an IP datagram Intentionally, it is very similar to frames for IEEE 802.3 and IEEE 802.5 Like them, when transporting IP datagrams and ARP messages, FDDI uses a SNAP header ... a Token Ring data frame The address fields contain the unicast hardware addresses of the destination and source or multicast or broadcast addresses • IEEE 802.2 LLC header: For IP datagrams and...

Ngày tải lên: 14/08/2014, 13:20

... discarding it Segmenting a large frame 5.2 Bridging 89 Table 5.1 Comparison of Frames on Different LANs Field Size Ethernet IEEE 802.3 Preamble Variable 0×AA-AA -A 0×AA-AA-AA-AAA-AA-AA -A AA-AA-AA-AA ... class of traffic Figure 4.8 includes a table that summarizes their traffic handling ability 72 Wide Area Networks ATM network interface layer IP datagram ATM AAL Convergence sublayer adaptation ... Client A LAN Local area networks LAN LAN Server B IMD Interface matching device Figure 5.1 Connecting Client A to Server B mentation in forwarding and addressing, in data formats, and in transmission...

Ngày tải lên: 14/08/2014, 13:20

... creation and transmission Both IPSec authentication tunneling datagram D(2) Encapsulating header Authentication header Original datagram D(1) IPSec encapsulating security payload tunneling datagram ... PPP frame The PPP frame is then incorporated in a new IP datagram with a UDP header and an L2TP header Adding an IPsec encapsulating security payload header and trailer and an IPsec authentication ... origin and destination of the original datagram At the tunnel server, the original IP datagram is unwrapped and forwarded to its destination In effect, the action of tunneling has created a private...

Ngày tải lên: 14/08/2014, 13:20

... 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes ... superframe (ESF) D C D F D C D F D C D F D C D F D C D F D C D F 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data ... between originating and terminating multiplexers To the SPE are added 27 bytes of transport overhead to form a frame The transport overhead contains data that monitors and manages the optical line between...

Ngày tải lên: 14/08/2014, 13:20

... such as calling number ID may be activated If the called party’s line is busy, IN features such as call waiting, call forwarding, and voicemail may be invoked Adjunct service points (ASPs) and ... be read into the data stream as ⇐1000011 In a Token Ring local area network, it will be read into the data stream as ⇐1100001 Ethernet is said to employ little Endian or canonical format and Token ... word and its alternate contain ten 1s and ten 0s To maintain a balance between 1s and 0s in the bit stream, the transmitter maintains a tally of whether more 1s than 0s or more 0s than 1s have...

Ngày tải lên: 14/08/2014, 13:20

... Ethernet Frame HEADER PREAMBLE (8 bytes): 0×AA-AA-AA-AA-AA-AA-AA-AB (6 bytes): If address is unicast, contains the hardware address of a specific station If address is multicast, carries a code that ... 802.11 frame List of Acronyms and Abbreviations 4B/5B binary/5 binary 8B/10B binary/10 binary AAL ATM adaptation layer ABM asynchronous balanced mode ABR available bit rate ACELP Algebraic-Code-Excited-Linear-Prediction ... IEEE 802.3 MAC HEADER PREAMBLE (7 bytes): 0×AA-AA-AA-AA-AA-AA-AA START DELIMITER (1 byte): 0AB (2 or bytes): If address is unicast, contains the hardware address of a specific station If address...

Ngày tải lên: 14/08/2014, 13:20

... in the case of the data link layer, a header and trailer, are attached by each layer to form a frame The procedure is known as encapsulation, and the headers and trailer are said to encapsulate ... header and trailer are constructed When added to the IP datagram, they form the IP frame Data service unit digital line Part of data circuit-terminating equipment (DCE) serving a Data terminal equipment ... as to be compatible with receiving DTEs Data communication The act of sharing data among devices The act of transferring data among data processing machines over communication links under the...

Ngày tải lên: 14/08/2014, 13:20

... device that stores data, organizes and maintains databases, and delivers copies of data files to clients on demand A process that stores and distributes data Service access point A port within the ... display data May have native computing and data processing capabilities Relies on a host for support to accomplish the more intensive data processing tasks Provides an interface for users' instructions ... Performance Engineering, Robert G Cole and Ravi Ramaswamy Winning Telco Customers Using Marketing Databases, Rob Mattison WLANs and WPANs towards 4G Wireless, Ramjee Prasad and Luis Muñoz World-Class...

Ngày tải lên: 14/08/2014, 13:20

... exchange of messages in commercial operations and residential activities Developed initially for point-to-point data operations, it has been adapted to local area networks, wide area networks, radio ... equipment that make it possible to communicate using TCP/IP It explains advanced LAN and WAN technologies and gives an integrated view of bridging, routing, tagging, and labeling operations In addition, ... metropolitan area exchanges (MAEs) in major metropolitan areas and many more Internet eXchange Points (IXPs) in smaller metropolitan complexes Internet exchanges have been established in developed (and...

Ngày tải lên: 14/08/2014, 13:20

... CSUs contain additional facilities that are used to detect and isolate line and equipment problems 2.2 Making a Data Call Consider a host (Host A) in a multilocation company that needs a data file ... Early data processing systems were based on a mainframe computer (host) that supported many terminals (often characterized as dumb terminals) Server: A data processing device that stores data, ... Encapsulation and Decapsulation In descending the protocol stack, the overhead data added at each layer is placed in a header, or, in the case of the data link layer, a header and trailer This procedure...

Ngày tải lên: 14/08/2014, 13:20

... in a frame containing an IP datagram The frame consists of an IEEE 802.5 header, an IEEE 802.2 LLC header, an IEEE 802.3 SNAP header, the payload (IP datagram), and an IEEE 802.5 trailer Appendix ... asynchronous links (such as modem mediated analog telephone lines), so that a flag character or an escape character within the IP datagram payload shall not interrupt transmission, PPP employs character ... frame that encapsulates an IP datagram Intentionally, it is very similar to frames for IEEE 802.3 and IEEE 802.5 Like them, when transporting IP datagrams and ARP messages, FDDI uses a SNAP header...

Ngày tải lên: 14/08/2014, 13:20

... Field Preamble Comparison of Frames on Different LANs Size Ethernet IEEE 802.3 Variable 0×AA-AA -A 0×AA-AA-AA-AAA-AA-AA -A AA-AA-AA-AA A- AA-AB MAC Header Starting delimiter byte No 0×AB Access control ... Wide Area Networks ATM network interface layer IP datagram ATM AAL Convergence sublayer adaptation AAL Segmentation and layer AAL reassembly sublayer 48 byte cells ATM layer 53 byte cells Physical ... Client A LAN Local area networks LAN LAN Server B IMD Interface matching device Figure 5.1 Connecting Client A to Server B mentation in forwarding and addressing, in data formats, and in transmission...

Ngày tải lên: 14/08/2014, 13:20

... IP datagram addressed to an enterprise destination This datagram is encapsulated in a PPP frame and may be encrypted It becomes the users data in a second IP datagram addressed to the intranet ... WAN C E Core switch C E VLAN-unaware domain LAN VLAN-aware domain E C C E VLAN-unaware domain LAN Figure 5.10 VLAN domains • Use the results to associate the frame with a particular VLAN • Insert ... origin and destination of the original datagram At the tunnel server, the original IP datagram is unwrapped and forwarded to its destination In effect, the action of tunneling has created a private...

Ngày tải lên: 14/08/2014, 13:20

... 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes 23 data bytes ... between originating and terminating multiplexers To the SPE are added 27 bytes of transport overhead to form a frame The transport overhead contains data that monitors and manages the optical line between ... the bipolar stream to AMI format, time the outgoing signals, and regenerate the incoming signals Full-rate (64 kbit/s) data channels are interleaved to create a 1.544-Mbps data stream Figure 7.6...

Ngày tải lên: 14/08/2014, 13:20

... such as calling number ID may be activated If the called party’s line is busy, IN features such as call waiting, call forwarding, and voicemail may be invoked Adjunct service points (ASPs) and ... the called party between originating and terminating terminals is straightforward Setting up and managing the call requires a significant amount of processing power; adding IN features requires ... be read into the data stream as ⇐1000011 In a Token Ring local area network, it will be read into the data stream as ⇐1100001 Ethernet is said to employ little Endian or canonical format and Token...

Ngày tải lên: 14/08/2014, 13:20