Oracle ebooks

http://www.db.cs.ucdavis.edu/teaching/sqltutorial/

for download pdf SQL tables, queries, PL/SQL


http://www.dbbm.fiocruz.br/class/Lecture/d17/sql/jhoffman/sqltut.html

Basics of the SELECT Statement , Joins , Aggregate Functions , Views ,Creating New Tables ........... with examples


http://cisnet.baruch.cuny.edu/holowczak/oracle/sqlplus/

Oracle products , SQL *plus basics , DDL , DML , Tree queries , stored procedures , triggers. with examples

C ebooks

http://www.le.ac.uk/cc/tutorials/c/

why use C , contrl loops , variable declaration ,.... for beginners

http://www.physics.drexel.edu/courses/CompPhys/General/C_basics/c_tutorial.html

Pointers , arrays,...

http://www.howstuffworks.com/c.htm

C tutorial by questions... not for beginners

http://www.iu.hio.no/~mark/CTutorial/CTutorial.html

introduction , libraries , comments, parameters... good

Cpp ebooks

http://www.cplusplus.com/doc/tutorial/

Functions , arrays, classes, pointers,templates.... good one..


http://www.softlookup.com/tutorial/c++/index.asp

Exception handling , polymorphism... good.. more elaborated


http://www.4p8.com/eric.brasseur/cppcen.html

For C users .... not for beginners

http://www.desy.de/gna/html/cc/Tutorial/tutorial.html

more advanced

Java ebooks

http://www.meshplex.org/wiki/Java_programming

introd to java , overview,OOPS,Applets,Inheritence,Exception handling,IO,Advanced Java


http://java.sun.com/docs/books/tutorial/

Java getting started, classes, Swing, Deployment


http://www.cafeaulait.org/javatutorial.html

syntax,examples..