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What is Candidate Key Super Key or Candidate Key: It is such an attribute of a table that can uniquely recognize a row in a table. Generally they have unique values and can n
Write short notes on Schema diagram. A database schema along with primary key and foreign key dependencies can be depicted pictorially by schema diagram. Every relation appears
what is data link layer
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Creation of Indexes Automatically: When a primary key or Unique constraint is show in a table definition then a unique index is formed automatically. Manually: User can
Explain Data Dictionary in short?
DML Precompiler All the DBMS have two basic sets of Languages - Data Definition Language (DDL) that have the set of commands needed to define the format of the data that is b
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