SMARIKA workeducation | Page 98

Class XI 1. 2. 3. i) Introduction to Databases • Entity – Relationship Diagram • Attributes • Normalization • Relationship ii) Keys • Primary key • Foreign key • Candidate key • Alternate key • Composite key iii) Data Integrity • Entity Integrity • Domain Integrity • Referential Integrity • User-defined Integrity Microsoft Access • Creating Database • Creating Table • Inserting, modifying and deleting data in the table. • Relating tables • Enforcing Referential Integrity • Degree of Relationships SQL Server • Introduction – What is SQL ? • Querying Database Tables • Ordering the results of a Query • Conditional Retrieval of Rows 90