user tier. Database tier: it consists of queries, relations and constraints. Application tier: it acts a mediator between database tier and presentation tier providing views. Presentation tier: multiple views of databases can be provided here. Data models explain the structure of databases, they introduce
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Database Question 1: Data Model/Database Model Flat file Flat file data model is model where data was store as a plain text file in a single table. Each line of the table hold each record with field and it is separated by commas or tabs. It cannot contain multiple tables like relational database. All the data stored by flat file, a computer file system will be store in a single
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1. How we can define the structure of the relation ,deleting relations and relating schemas ? a) DML(Data Manipulation Langauge) b) DDL(Data Definition Langauge) c) Probe d) Relational Schema Answer:b 2. Which one of the following delivers the capability to query material from the database and to insert tuples into, delete tuples from, and modify tuples in the database ? a) DML(Data Manipulation Langauge) b) DDL(Data Definition Langauge) c) Probe d) Relational Schema Answer:a 3. What command is used
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latency over reliability. The Transmission Control Protocol provides a communication service at an intermediate level between an application program and the Internet Protocol. It provides host-to-host connectivity at the Transport Layerof the Internet model. An application does not need to know the particular mechanisms for sending data via a link to another host, such as the required packet fragmentation on the transmission medium. At the transport layer, the protocol handles all handshaking and transmission
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There are multiple changes that occurred to the test server I deployed after installing SQL Server 2012. This summary will analyze those changes and list the steps taken to review these changes. To properly list these changes, an overview will first be taken prior to the installation followed by an examination of anything different after the install. The test server was setup with a fresh install of Server 2008 R2 and all appicable updates. The only other software that was installed was the .NET
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2.2.3 Application layer The application layer consists of management and business-oriented software. It can also be understood as a user interface for the control layer. From the management point of view, the programs running in the application layer may provide the network engineers with statistics about their networks. Currently using application layer metrics in the form of a common measurement solution received minor attention. Such as application of a measurement can be a generic usage-based
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The second level is network layer. Network layer is responsible for the reliable transmission of information from perceptual layer, initial processing of information and classification. In this layer the information transmission is relied on several basic networks, which are the internet, mobile communication network, satellite nets, wireless network, network infrastructure and communication protocols. The third level is support layer. Support layer sets up a reliable support platform for the application
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4. link layer encapsulates the datagram received from the network layer into a frame? In order for a datagram to be transferred from source host to destination host, it must be moved over each of the individual links in the end-to-end path. Over a given link, a transmitting node encapsulates the datagram in a link-layer frame and transmits the frame into the link; the receiving node then receives the frame and extracts the datagram. A link-layer protocol is used to move a datagram over an individual
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ASSIGNMENT # 03 (DATA COMMUNICATION AND NETWORKS) ANS 1: WIRESHARK:- As we all know well that networking and communication of computers happens worldwide in the terms of packets. Data divides into the packets like IP packets and then these packets travels over a network and then reaches its end point where packets then reassembled and the data or information is delivered to the destination. But there is a requirement of packet analyzers to analyze and captures the packet which reaches to the machine
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Good morning team, as you know there was a site survey performed for our client Sifers-Grayson on Monday morning. This meeting is to review any issues uncovered during the site survey and the recommendations we can offer our client. Sifers-Grayson already has two redundant wide area network connections, but we need to explain why having two separate (redundant) wide area network connections from the campus area network to the internet is important. We need to convey to our client that the most
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