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Differentiate sub-class and super-class?
The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Conversely, employee is a super class of teller, and person is a super class of employee.
Text Processing: Use readLines to read SOU.txt into R. Create a vector called Pres containing the names of the presidents giving each speech. To do this, rst identify the lin
HOW MANY TYPES OF VIEWS
Distributed Control and Data sharing: The geographical distribution of an organization can be showed in the distribution of the data; if a number of different sites are linked to e
Submit the SQL Statements necessary to create your database according to the following guidelines: Your SQL statements should exactly mirror your ERD. All primary keys,
What is a view in SQL? When can views be updated? A view is a virtual table which consists of columns from one or more tables. Through it is same to a table; it is stored in
multidimensional data model
What is Specialization? Specialization: Specialization permits you to describe new types of information (new structural types or latest domains of information), although reusin
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
What are called jukebox systems? Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
Define Hash files organization a. Hashing includes computing the address of a data item by calculating a function on the search key value. b. A hash function h is a functi
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