How Do PDA's Work with Databases?
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What is a PDA Database?
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A personal digital assistant (PDA) database is a transfer of desktop information to a mobile device. The basics of PDAs consist of their operating systems, usually Palm, PocketPC, EPOC, Psion or Windows CE. Some also work with Linux, but they are not as popular. They are also defined by their screens (i.e., color or monochrome), weight density (usually featherweight), memory capacity and wireless Internet accessibility.
The Importance of WAP Technology
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Wireless application protocol (WAP) is global technology designed to access the Internet, telephones and private and public databases via world wide web (www) programming languages, wireless markup language (WML), WML Script and a framework to house telephone services such as messaging, telefaxes, call forwarding and address books.
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Synchronization of PDAs
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The most popular brand names for the systems that transfer data are ActiveSync, Bluetooth and infrared (IrDA). PDAs sync (i.e., match information to other similar or same information) with desktop computers. They are used to manage databases, including diaries, contacts, to-do lists, emails and documents. They can even assist wait staff in restaurants. Meal orders are entered into the PDA, downloaded to the cash register with the corresponding table number and transmitted to the kitchen so the order goes in as soon as it is placed. The largest database source for which PDAs are used is in warehousing and stock inventory management systems for packing orders, which involves the use of bar code readings.
The Particulars of the Database Protocol
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Databases work with a series of tables used to store data. Tables are dimensional representations that use columns and rows of letters and/or numbers. Although one cannot always see the table, data that is entered goes into a stored table to be separated and organized. A database management system (DBMS) uses unique identifiers to keep each table specific. Most consist of a primary key, which is used to index the table and manage the information. Structured query language (SQL) is the standard programming language used to access and manipulate databases.
Corporate and Personal Usage and Maintenance
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Corporate databases are usually maintained by administrators, who store, manage, integrate and extract data. This is a simple process that entails entering data into a software application and synchronizing the desktop computer with the mobile device or entering data directly into the mobile unit.
Why Synchronize?
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Synchronizing data and uploaded/downloaded information is an integral process that allows PDAs and databases to work together. This not only keeps information fresh and up to date, but it also eliminates useless duplication of uploaded or downloaded data.
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