TY  - BOOK
AU  - Mahar, Sana.
AU  - Jokhio, Imran Ali. 
TI  - Comparative analysis of SQL query optimization techniques using: Oracle, Mysql, Postgresql 
PY  - 2017///
CY  - MUET, Jamshoro
PB  - Software Engineering
KW  - Software Engineering
N1  - Includes references
ER  -