3i Infotech Placement: Sample Questions 1038 - 1040 of 1245

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Question 1038

Write in Short Short Answer▾

What is an Extension of entity type?

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Explanation

Entity Type is Intension and Extension
  • The collections of entities of a particular entity type are grouped together into an entity set
  • It is the number of tuples present in a table at any instance.
  • This is time dependent.

Question 1039

Describe in Detail Essay▾

In UNIX a files i-node ________?

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Explanation

Understanding of Process File Desc and Inode Table
  • Inode is a data structure that defines all specifications of a file like the file size, number of lines to a file, permissions etc.
  • It is used in a Unix-style file system to describe a file system object such as a file or a directory.
  • Inode stores the attributes and disk block location of the object՚s data.
  • File system object attributes may include metadata as well as owner and permission data.
  • Directories are lists of names assigned to inodes.
  • A directory contains an entry for itself, its parent, and each of its children.

Question 1040

Describe in Detail Essay▾

What is a parameterized type?

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Explanation

  • A template is a parameterized construct or type containing generic code that can manipulate any type.
  • Called parameterized because actual type is a parameter of the code body.
  • Polymorphism achieved through parameterized types is called parametric polymorphism.
  • Parametric polymorphism allows same code to be used on different types passed as parameters.
Given the Image is Parameterized Type (Polymorphism)