Oracle 10g Developing Media Rich Applications by Lynne Dunckley, Larry Guros

By Lynne Dunckley, Larry Guros

Oracle 10g constructing Media wealthy functions is concentrated squarely on database directors and programmers because the starting place of multimedia database purposes. With the discharge of Oracle8 Database in 1997, Oracle turned the 1st advertisement database with built-in multimedia know-how for program builders. for the reason that that point, Oracle has more suitable and prolonged those positive factors to incorporate local aid for snapshot, audio, video and streaming media garage; indexing, retrieval and processing within the Oracle Database, program Server; and improvement instruments. Databases aren't in simple terms phrases and numbers for accountants, yet in addition they may still make the most of an entire variety of media to fulfill shopper wishes, from race automobile engineers, to production techniques to safety. the whole variety of audio, video and integration of media into databases is undertaking severe to those purposes. This publication info the newest gains in Oracle's multimedia expertise together with these of the Oracle10gR2 Database and the Oracle9i software Server. The expertise coated contains: item relational media garage and prone in the database, center tier software improvement interfaces, instant supply mechanisms, and Java-based instruments. * provides huge insurance to integration of multimedia beneficial properties equivalent to audio and instrumentation video, from race automobiles to investigate functionality, to voice and imagine attractiveness for safety info bases. in addition to complete multimedia for shows* comprises box verified examples in company environments* offers insurance in an intensive and transparent model built in a London college specialist direction

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This can appear similar to interlacing, but in this case fundamental parts of the image can be transformed and transmitted. A low-resolution image can be delivered to the user first, followed by successively higher resolution images. JPEG2000 also allows the user to add encrypted copyright information. Though JPEG2000 is a new format that is not yet widely supported by image-editing and Web-browsing applications, it can already be of major benefit to photographers who learn to incorporate it into their workflow routines.

Green as a channel). PNG images can be used for progressive display as the original image is converted to a sequence of smaller images so that the first image in the sequence defines a coarse view until the last image completes the original source image. The set of reduced images is called an interlaced PNG image. This allows the image to be seen more quickly but may make it more difficult to compress. PNGF is the Oracle interMedia designation for the portable network graphics (PNG) format. All PNG images are compressed using the DEFLATE scheme.

The advantages of streaming are that the user can listen during the download process. midi. mps. However, streaming audio may not be displayed by the Web browser without a plug-in being available, such as RealAudio, and may require a helper application, such as RealPlayer. Compression is available for MP3 and RealAudio formats. Another issue with audio is that it is considered good practice to include a transcript of any spoken audio files so that users can read as an alternative to listening. This can be catered to in the ORDAudio object type (see Chapter 3).

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