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Opting classic row modeling or EAV data modeling?
Few of the circumstances are listed below where EAV scores over conventional tables: · The data type of individual attributes varies. Like in above example EAV is used because the requirements vary from client to client like some may want an extra address like added to existing address format. · The categories of data are numerous, growing or fluctuating, but the number of instances (records/rows) within each category is very small. Here, with conventional modeling, the database’s Entity-Relationship Diagram might have hundreds of tables: the tables that contain thousands/ millions of rows/instances are emphasized visually to the same extent as those with very few rows. The latter are candidates for conversion to an EAV representation. Other Related Links: EAV(Entity-Attribute Value) Model EAV versus Row modeling Downsides of EAV data model over class row model Optin...
Clash Back from Apple, sues Motorola...
Earlier this month, there was a news that Motorola had sued Apple, alleging infringement of 18 patents involving the iPhone, iPad, and other Apple devices. In response, Apple has now launched a pair of lawsuits alleging that Motorola is the infringing party, pointing to a number of patents involving touchscreen displays and multi-touch technology, and also methods for interacting with settings and data on a device. Apple wants the court to award them damages and prevent Motorola from continuing to sell the offending devices, which include the Droid, Droid 2, Droid X, BackFlip, Devour i1, Devour A555, Cliq, and Cliq XT. Read More>>
Motorola Sues Microsoft over 16 patents...
As if there weren't already enough patent suits related to smartphone technologies, Motorola just announced its widely anticipated countersuit against Microsoft. Its subsidiary Motorola Mobility filed complaints with two US District Courts (Southern District of Florida and Western District of Wisconsin). Motorola already litigates with Apple in those and other courts. According to Motorola, the patents relate to technologies in the fields of operating systems, video codecs, email, instant messaging, object-oriented software architectures, WiFi, and graphical passwords. Motorola claims Windows, the Live messenger, Windows Phone, Outlook and other Microsoft products infringe. Motorola's action is no surprise given that all of the companies sued over patent infringement by Android — with the exception of Google — have already countersued.
Dell Stops selling Ubuntu powered PCs Online
Dell has stopped selling consumer PCs preloaded with Ubuntu from its website, and doesn't know when they're coming back. A search for Ubuntu on the Dell UK website returns only one laptop — the Dell Latitude 2100 from the company's business range. Dell insists that it's continuing to sell Ubuntu systems, but only over the phone, and has no idea when — or even if — the Ubuntu PCs will return online. 'We've recently made an effort to simplify our offerings online, by focusing on our most popular bundles and configuration options, based on customer feedback for reduced complexity and a simple, easy purchase experience,' Dell told PC Pro. 'We're also making some changes to our Ubuntu pages, and as a result, they are currently available through our phone-based sales only.' The move comes after Dell put a page on its website advising customers only to go for Ubuntu if they were interested in open-source programming.
Entity Attribute Value Model
EAV (Entity-Attribute Value) Model It is a data model to describe entities where number of attributes for the entities could be very large in amount. EAV helps us to overcome the limitations of conventional database model. Ex: Organization ‘ABC’ defines the entity ‘Address’ as: Organization ‘ABC’: Address Line1 Line2 State Country Zip At the same time Organization ‘XYZ’ may define ‘Address’ as: Organization ‘XYZ’: Address Line1 Line2 Line3 City State Country Zip Phone A conventional database table design (one fact per column or set of facts per row) is unsuitable for such type of data, because of: · the need to continually add new tables or columns whenever new facts need incorporation · ...
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