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Explain the Management of Data Store
Every system irrespective of its nature of application requires storing permanent data for consequent use in problem solving. Some objects in models need to be constant to store the state of object permanently in database. Most systems need constant data which is not lost when system closes down. These data are stored in file system in database. Object-oriented applications sometimes use relational databases to provide persistence.
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
differences between a classified catalog and a dictionary catalog
Define granularity, hierarchy of granularity of locks & multiple granularity locking. Explain the modified two phase locking along with multiple granularity locking. Ans: The s
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
How does Tuple-oriented relational calculus vary from domain-oriented relational calculus? The tuple-oriented calculus uses a tuple variables i.e., variable whose only allowed
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What is data independence? Data Independence: Techniques which permit data to be changed without affecting the applications in which procedure it. There are two types of data
The aims of the project are: 1. To enable the students to undertake the detailed design of a specific plant or process 2. The design projects includes: process selection; und
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
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