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What is Hierarchical DBMS
In HDBMS, data is structured in a tree like manner. There is a parent-child relationship between data items and the data model is very suitable for representing one-to-many relationship. To access the data items, some type of tree-traversal techniques are used, such as preorder traversal.
What are the objectives of query processing? Ans: The objectives of query processing is to transform a query written in a high level language into a accurate and efficien
WHAT IS DSS? WRITE ITS REQUIREMENTS.
List any two disadvantages of a database system ? The disadvantages of database system are: • Database systems are difficult, complex, and time-consuming to design. • Substanti
Atomicity : Either all functions are laid out or none are. Users could not have to think about the effect of incomplete operations. DBMS ensures this by undoing the functions
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Differance between Unordered and ordered file ? Unordered file do no has any sequence although ordered file has arranged in a few sequence and data are assigned in ordered form
Problem : (b) A deductive database system is essentially the outcome of applying mathematics logic to database management, where logic is used for both data representation and
What are the ways in which signal can be generated A signal might be generated in many ways such as a Signal is result of particular physical condition. Whenever a process writ
Conversion of entity sets: I) For every strong entity type E in the ER diagram, we make a relation R containing all the easy attributes of E. The relation R pri
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
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