Posted in Data Structure

DDL, DML, DCL and TCL

DDL

(Data Definition Language)

DML

(Data Manipulation Language)

DCL

(Data Control Language)

TCL

(Transaction Control Language)

Create Select Grant Commit
Alter Insert Revoke Savepoint
Drop Update   rollback
Truncate Delete   Set transaction
Comment Merge    
Rename Call    
  Explain plan    
  Lock-table  
Posted in Core Java, Data Structure

Feature Comparison of some data structues

  ArrayList Array List Vector LinkedList HashTable HashMap Set Map
Unlimited size ×            
Index based            
Allow Nulls       ×    
Synchronized ×       ×    
Allow duplicate             ×  
Ordered data               ×