Access as a Front End to SQL Server in .NET

Generating Data Matrix in .NET Access as a Front End to SQL Server

4

GETTING STARTED c. 1:1: the largest previews in Lightroom, 1:1 refers to one screen pixel per one image pixel. You ll often be looking at 1:1 previews as you zoom in to look more closely at a photo.

Setting up a wireless network connection can be one of the more challenging features to get working in Linux. Despite improvements to open source drivers for many wireless devices, you can t assume that any wireless card connected to a computer running Linux will just work. Wireless card manufacturers have, for the most part, not released specifications for their equipment that would allow open source developers to create Linux drivers. Most vendors simply produce binary-only drivers for Microsoft Windows systems. As a result of this state of the wireless world, the following wireless projects have emerged to help Linux users: n ndiswrappers (http://ndiswrapper.sourceforge.net) This project lets you use wireless drivers in Linux that were created to run in Windows. Refer to the

Digit Span sub-test (tests immediate memory for strings of spoken digits)

Each year of the late 1980s was routinely proclaimed as the Year of the LAN, with printer and file sharing being the initial technical objectives. Access to host applications, such as financial databases, remained a user requirement, however. This requirement produced a merger of technologies, with the LAN as the glue connecting the host, peripherals, and workstations together. Two major brands of glue emerged. The first, Ethernet, was developed by DEC, Intel, and Xerox beginning in the early 1970s. It originally consisted of a coaxial cable bus topology network (Figure 2-3), but evolved into a number of options for both transmission medium (twisted pairs, coax, or fiber) and architecture (bus or star). In 1980, the Ethernet standard was turned over to the Institute of Electrical and Electronics Engineers (IEEE), which enhanced the standard and produced a successor technology, designated IEEE 802.3. The IEEE 802.3 standard is similar, but not identical, to the original Ethernet, as Section 2.4.1 will discuss. One of the advantages of IEEE 802.3 is that it has evolved from the original 10 Mbps transmission rate into the 1-10 Gbps rates as application requirements have dictated. In addition, this technology has migrated from the venue of the local area networks (LANs) into metropolitan area networks (MANS), thus solving some critical interoperability challenges over broader geographic areas. The second type, token ring/IEEE 802.5 (Figure 2-4), was heavily influenced by IBM. This topology supported a variety of transmission media (shielded and unshielded twisted pairs, and fiber optic cables) in a distributed star architecture. Token ring networks were standardized at two transmission rates, 4 and 16 Mbps, with some experimental development at higher rates. For a variety of technical and economic reasons, however, Ethernet/ IEEE 802.3 networks have achieved a considerably higher market share than token ring/IEEE 802.5 networks, relegating the latter to the legacy network designation for most applications.

The next step is to give myself permission to execute the le, using the chmod command (see 6):

A linked server can be a SQL server or any other data source with either an OLE DB provider or ODBC drivers. Distributed queries can select data and modify it (INSERT, UPDATE, DELETE), according to the features of the OLE DB provider or ODBC driver. SQL Server queries can reference external data by referring to the precon gured linked server or specifying the link in the query code.

It was stunning. Companies lost lots of productivity to employees staring at their screen savers. Screen savers brought a lighthearted element to the cold world of electronics. Later, businesses realized that screen savers were a great place to leave branding. Company logos floating around screens became common. Also, marketing and sales information appeared scrolling across the screens of unused computers in retail outlets. Eventually someone realized that with the power of the Internet, screen savers could extend the number-crunching capabilities of financially limited research institutions. Projects such as SETI@home and Climateprediction.net turn hordes of unused computers into massive distributed supercomputers with screen saver applications. IBM s involvement in the World Community Grid uses a similar approach for medical research, creating a grid with more power than many supercomputers. When a computer is not in use, the screen saver activates. In most cases, your computer is not using its CPU to crunch numbers when in screen saver mode. In even a small organization, that is lots of idle time wasted, unless, of course, you write or install your own screen saver to make use of that idle time. Screen savers range from whimsical diversions to marketing applications to number-crunching research devices. Watching screen savers is fun. Writing screen savers is even more fun. At the time of this writing, no Java libraries are specifically made for writing screen savers on OS X. This does not mean you cannot write screen savers for Java. In fact, using the techniques I discuss in this book, writing a simple wrapper around OS X s Cocoa Screen Saver Framework is easy. After you have a short JNI wrapper around an Objective-C screen saver class, the entire world of Java opens up to writing screen savers for OS X.

Recall that the SOAP header is an element within the SOAP message. The SOAP header is optional but plays a very important role customizing messages. It enables you to include elements that relate to your specific application. Additionally, the SOAP header must be namespace qualified. More importantly, the header allows the SOAP message to extend its capabilities by enabling features like security and transaction handling. Any elements within the header element are part of the SOAP header block.