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Question:
(a) What is ODBC and what is its function?
(b) What is Web application server, and how does it work from a database perspective?
(c) What does e-commerce mean and how did it evolved?
(d) Identify and briefly describe three benefits and three disadvantages of e-commerce.
(e) Define and contrast B2B and B2C e-commerce styles and support your answer with appropriate example.
(f) Describe e-commerce architecture, then briefly describe each one of its components.
What is horizontal fragmentation? Horizontal fragmentation divides the relation by assuming every tuple of r to one or more fragments
The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
how to calculate frequency count of algorithm
How do I begin
Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat
1. Staff (staffID --> availabilityID) 2. Services (servicesID --> itemBasedID --> timedBasedID) 3. TimedBased (timedbasedID--> priceid) 4. Clients (clientId, serviceId-->
ALTER TABLE Command : This command is used for variation of existing structure of the table in the given situation: When a new column is to be added to the table structure.
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