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1. Staff (staffID --> availabilityID) 2. Services (servicesID --> itemBasedID --> timedBasedID) 3. TimedBased (timedbasedID--> priceid) 4. Clients (clientId, serviceId-->
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
create an er diagram for production management in film industry
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
Prepare a data flow diagram for computing the volume and surface area of a cylinder. Inputs are the height and radius of the cylinder. Outputs are the volume and surface area of th
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
The technique of converting the state diagram to code a) Identify all major control paths. Start from initial state; choose a path across the diagram that corresponds to normal
what are the main characteristics of database
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