Re; hi Can anyone anwer my questions

1)How to lock a table of type(Vabak)?so that some might not be able to access it? How many reecords can we lock at a time?

2) Suppose if there are 3 fields namely f1,f2,f3.f1&f2 are Character fields,f3 is numeric field.Based on f2 I wanna use collect keyword? How its possible?

If any one can answer these questions i would be thankfull for them and award points