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Describe the capabilities offered via MySQL client APIs?
. • Checking for errors.
. • Connecting to the MySQL server, selecting a database, disconnecting from the server
what is meant semantic query optimization? how does it differ from other query optimization techniques?
(a) Why did SAP introduce the extended star schema?
average response time?
Set Difference If R1 and R2 are two union compatible relations or relations then result of R3 =R1- R2 is the relation that have only those tuples that are in R1 but not in R2.
Define null values. In some cases a certain entity may not have an applicable value for an attribute or if we do not know the value of an attribute for a certain entity. In the
About Attribute inheritance
Consider a database application that deals with an Employee relation with information such as SIN, name, data of birth (DOB), and DID (the ID of the department at which the employe
In the ER diagram, one example of subclassing is depicted following the Services entity. The subclasses Item Based and Time Based are created. The entity Services gains the attribu
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
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