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Write short notes on domain relational calculus
The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole tuple.
Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
Critically explained the benefits and limitations of different database technologies with proper examples
Describe Graphical User Interface? Graphical User Interfaces (GUIs) - A GUI typically displays a schema to the user in diagrammatic form. The user can then specify a query th
Discuss deferred update technique of recovery. What are the advantages? Ans: The deferred update methods do not physically update the database on disk till after a transact
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1. Staff(staffID, firstName, lastName, availabilityID, experience, phone, mobile, email); 2. Availability(availabilityID, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday,
What is the difference between a key and a superkey? Key - A key a single attribute or a combination of two or more attributes of an entity set which is used to identify one
Single Valued Normalisation Codd in the year 1972 formed three normal forms (1NF, 2NF, and 3NF). These were based on functional dependencies between the attributes of a relati
You are required to design and build a data mart/data warehouse using Oracle. A national bank allocates funding every year for its local branches to provide temporary staff cove
What are the object-oriented approaches Software systems which are designed with structured design methodology never support some of desired quality attributes for example reus
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