SQL Server 2012 Data Integration Recipes provides focused and practical solutions to real world problems of data integration. Need to import data into SQL Server from an outside source? Need to export data and send it to another system? SQL Server 2012 Data Integration Recipes has your back. You'll find solutions for importing from Microsoft Office data stores such as Excel and Access, from text files such as CSV files, from XML, from other database brands such as Oracle and MySQL, and even from other SQL Server databases.
Data Modeling Techniques for Data Warehousing
Chuck Ballard, Dirk Herreman, Don Schau, Rhonda Bell, Eunsaeng Kim, Ann Valencic
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Data Modeling Techniques for Data Warehousing February 1998
.Take Note! Before using this information and the product it supports, be sure to read the general information in Appendix B, “Special Notices” on page 183.
Ensuring the sending entity does not overwhelm the receiving entity
Preventing buffer overflow
Time taken to emit all bits into medium
Time for a bit to traverse the link
One of the major functions of the physical layer is to move data in the form of electromagnetic signals across a transmission medium. Whether you are collecting numerical statistics from another computer, sending animated pictures from a design workstation, or causing a bell to ring at a distant control center, you are working with the transmission of data across network connections. Chapter 3 discusses the relationship between data, which are created by a device, and electromagnetic signals, which are transmitted over a medium.
A computer network is designed to send information from one point to another. This information needs to be converted to either a digital signal or an analog signal for transmission. In this chapter, we discuss the first choice, conversion to digital signals.
Most input/output devices reside the computer case. These devices communicate
with what is inside the computer case through cables attached to the case at a connection
called a port, sending data and/or instructions to the computer and receiving them from
the computer. Most computers have their ports located on the back of the case, but some
models put the ports on the front of the case for easy access. The most popular input
devices are a keyboard and a mouse, and the most popular output devices are a monitor
and a printer.
The keyboard is the primary input devices of a computer.
Synchronous systems negotiate the connection at the data-link level before communication begins Basic synchronous systems will begins. synchronize two clocks before transmission.
Asynchronous systems do not send separate information to indicate the encoding or clocking information. The receiver must decide the clocking of the signal on it's own. This means that the receiver must decide where to look in the signal stream to find ones and zeroes.
The purpose of a preface in our view is rather unashamedly to sell the book—to
communicate the message of the book succinctly and either to motivate the reader to
explore its content or to leave the reader feeling that just maybe he or she is losing out if
the book’s theme does not fire their imagination.
WiMAX operates on the same general principles as Wi-Fi — it sends data from
one computer to another via radio signals. A computer (either a desktop or a laptop)
equipped with WiMAX would receive data from the WiMAX transmitting station,
probably using encrypted data keys to prevent unauthorized users from stealing
The web page is derived from data that changes frequently, results from search engines and order confirmation pages at on-line stores, The web page uses information from databases or other server-side sources.For a general Servlet you must subclass javax.servlet.GenericServlet...
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In this switching mechanism, a circuit is allocated to every piece of
complete information (called a call). This circuit allocation is all the way from
the sending to the receiving computer or terminal. It stays in place throughout
the duration of the call until the sending (or receiving) side signals that it is
not needed any more. In more formal terms, we say that a fixed bandwidth is
guaranteed throughout the communication session.
This diagram illustrates the Physical layer (Layer 1) of the OSI model. The Physical layer is responsible for the ultimate transmission of data over network communications media. It operates with data in the form of bits that are sent from the Physical layer of the sending (source) device and received at the Physical layer of the destination device. Ethernet cabling, Token Ring network technology and SCSI all function at the Physical layer of the OSI model. Hubs and other repeaters are standard network devices that function at the Physical layer.
IN 1995, WHEN I WAS IN MY SECOND YEAR IN COLLEGE, I was introduced to UNIX network programming.
In C, you could create sockets to open TCP connections to servers and code the servers that
accepted these connections. I remember the excitement I felt the fi rst time I created a TCP server: I
could accept connections and receive and send messages on them.
If I wanted my server to accept many concurrent connections, the common solution was to use
threads, and soon I had created my fi rst multi-threaded TCP server.
A virtual private network (VPN) is the extension of a private network that encompasses links across shared or public networks like the Internet. A VPN enables you to send data between two computers across a shared or public internetwork in a manner that emulates the properties of a point-to-point private link. The act of configuring and creating a virtual private network is known as virtual private networking.
Chapter 5: LAN ARCHITECTURE
Identify the seven protocol layers of the Open System Interconnection (OSI) Reference Model Discuss the functional attributes of each layer of the Open Systems Interconnection Reference Model Understanding Putting Data on the Cable and Access Methods
Introduction Open Systems Interconnection (OSI) Reference Model How network sends data Access Method Summary
• Recognize data • Divide data into manageable chunks • Add information to each chunk
– Location of data – Identify receiver...
We’ve installed and set up two software programs: the Apache web server with
PHP , and the MySQL database server . If you followed my recommendation, you
would have set them up using an all-in-one package like XAMPP or MAMP , but
don’t let that diminish your sense of accomplishment!
As I explained in that chapter , PHP is a server-side scripting language that lets you
insert instructions into your web pages that your web server software (in most cases,
Apache) will execute before it sends those pages to browsers that request them.
A computer network, often simply referred to as a network, is a connection of hardware, is a connection of hardware components and computer interconnected by communication channels that allow sharing of resources and information. Where at least one process in one device is able to send/receive data to/from at least one process residing in a remote device, then the two device are said to be in a network