what is the out put of below queries? a. select * from Emp where null = null; b. select * from Emp where 1=1;

Patni,

what are the joins,primary key,foriegn key, candidate key, super key and expain them?

Polaris,

diff between DELETE and TRUNCATE?.

HCL, Yalamanchili Software,

explain different types of jions with examples briefly?

Zensar,

explain different types of jions with examples briefly?

Accenture, Excellence, Zensar,

explain different types of jions with examples briefly?

Zensar,

what is difference between checked and unchecked exception plz explain examples ?

Fujitsu,

how can u handle runtime exceptions in java plz explain with examples briefly?

Fujitsu, IBM,

what is difference between throw and throws in exception?

Spenco,

how can u handle run time exceptions in struts and jsp plz explain briefly not single word answer?

TCS,

explain the struts-configuration file?

TCS, Zoho,

collection framework hirarchy?

how handle when client send multiple request at atime for single servlet

Aditya Birla, IBM,

how handle when client send multiple request at atime for multiple servlets servlets?

IBM,

session menagement in servlets explaion briefly?