Can you give me important topics for Database Management Systems (DBMS) for placement examination of good companies ?

Here I am giving you important topics for Database Management Systems (DBMS) for placement examination of good companies below :

RDBMS Topics
Difference between DBMS & RDBMS
Functions performed by DBMS
Understanding Database
Principles of conceptual Database Design
Relational Algebra and calculus
Theory of Relational Algebra Nine operations
Types of Users of DBMS
Evolution of DBMS
Traditional File Processing System and its Disadvantages
Advantages of DBMS (In Depth)
Drawbacks of Database systems
Components of Data Base Management system
File oriented system or file organization
Properties of RDBMS
Database Development
example-to-create-tables-in-sql.html
What is ROWID?
Using pre-defined functions
Explain Codd’s rule.
Data Models (Part 1) (Entity,Attributes,Mapping Cardinalities)
Data Models (Part 2)(Specialization, Generalization, Aggregation, ER Model)
Data Models (Part 3) (Network,Hierarchical and Relational Data Model)
Difference between Access and SQL server
How many triggers you can have on a table? How to invoke a trigger on demand?
Difference between stored procedure and triggers
Cursors , its Types , its attributes and its uses
What are keys and its Types?
What are SQL Joins?
What is aggregation, decomposition, generalization in RDBMS?
What are partial, alternate, artificial, compound and natural key ?
What is Functional Dependency, Multivalued dependency & Fully Functional dependency ?
What is Data Independence? What is a view and How it is related to data independence?
Difference between store procedure and Function
Types of Normalization or Normal forms
DBA, Database Designers & Application Programmers
Triggers , its Types and its Uses

What is a view ? What are its advantages and disadvantages ?
What are Joins
Explain Codd’s rule ?
What is integrity? What are the different integrity checks?
What is NULL value?
What is a transaction processing system? What are the different transaction systems are there?
What is MYSQL ?
What is MS SQL Server?
What is Oracle?
What is MS Access?
SQL Syntax (clauses) ??
What is SQL Data Types?
What is an Operator in SQL?
What is SQL?, Why SQL? and What is SQL Process?
SQL - CREATE Table
Denormalizing a Database
What is an index? Its advantages and disadvantages...
ACID Properties of Relational DBMS
What is a constraint? What are the different constraints available?
Client-Server Technology
Overview of Query Processing
Query Processing Strategies
Important Queries
Entity - Relationship Model and Its features
Requirement for dbms