... CONSTRAINT room_booked CHECK (NOT EXISTS (SELECT * FROM booking b WHERE b.date_to > booking.date_from AND b.date_from < booking.date_to AND AND b.room_no = booking.room_no AND b.hotel_no = booking.hotel_no)), ... CONSTRAINT guest_booked CHECK (NOT EXISTS (SELECT * FROM booking b WHERE b.date_to > booking.date_from AND b.date_from < booking.date_to AND AND b.guest_no = booking.guest_no))); 41...
... Access Protection Profile, Version 1.d, NSA, October 1999 May 2000 Issue 2.1 A-43 Common Criteria A-44 Database Management System Protection Profile May 2000 Issue 2.1 Database Management System Protection ... Assumptions May 2000 Issue 2.1 17 Common Criteria 18 Database Management System Protection Profile May 2000 Issue 2.1 Database Management System Pr...
... used to manipulate relational databases The Relational Database Concept • Proposed by Dr Codd in 1970 • The basis for the relational database management system (RDBMS) • The relational model contains ... defined and established in an ad-hoc manner ~ Croswell, 1991 Relational Database Management System - a database system made up of files with data elements in two-dimen...
... assuming the central hypothesis in this paper holds true, that the spread of scheduling was the genesis of modern project management’; then the 50th anniversary of the start of the project that ... only the 50th anniversary of the development of ‘critical path scheduling , but also the 50th anniversary of the start of modern project management’ a...