References

1

C. J. Date. A Guide to The SQL Standard. Addison-Wesley, 1987. ISBN 0-201-05777-8.

2

H. F. Korth and A. Silberschatz. Database System Concepts. Computer Science Series. McGraw-Hill, 1986. ISBN 0-07-044752-7.

3

M. E. Lesk. Some applications of inverted indexes on the unix system. Unix Programmer's Manual, 2b, 1978.

4

J. K. Ousterhout. Tcl and the Tk Toolkit. Professional Computing Series. Addison-Wesley, 1994. ISBN 0-201-63337-X.