Reduction of ER diagram to Table The database can be represented using the notations, and these notations can be reduced to a…
Category:
DBMS Tutorial
-
-
SQL Index Indexes are special lookup tables. It is used to retrieve data from the database very fast. An Index is used…
-
Three schema Architecture The three schema architecture is also called ANSI/SPARC architecture or three-level architecture. This framework is used to describe the…
-
Estimating Query Cost In the previous section, we understood about Query processing steps and evaluation plan. Though a system can create multiple…
-
Mapping Constraints A mapping constraint is a data constraint that expresses the number of entities to which another entity can be related…
-
Referential Integrity constraint A referential integrity constraint is also known as foreign key constraint. A foreign key is a key whose values…
-
SQL INSERT Statement The SQL INSERT statement is used to insert a single or multiple data in a table. In SQL, You…
-
Timestamp Ordering Protocol The Timestamp Ordering Protocol is used to order the transactions based on their Timestamps. The order of transaction is…
-
Evaluation of Expressions In our previous sections, we understood various concepts in query processing. We learned about the query processing steps, selection…
-
DBMS MCQ This section of interview questions and answers focuses on “Database Management System”. One shall practice these interview questions to improve…