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Desirable Properties Of Decomposition
Decomposition is a process of dividing a relation into its projections that will not be disjoint. Please remind the Relational projection operator and keep in mind no duplicate tuples are allowed in a projection.
Desirable properties of decomposition are given below:
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
how to make an e r diagram?
Benefits and Limitations od Data Models?
What Command You Use What Day of the week were you born
This language that enable user manipulate to or access data as organized by appropriate data model. Low level or Procedural DML : DML needs a user to specify what data ar
Describe in brief about DBMS ?
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
Consider the relation schemas as follows. works (person name, company name, salary); lives (person name, street, city); located in(company name, city); managers (person name
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