Representation of Geometric Constructs (a)Difference of cylinders (b)Union of cylinders (a)Difference of cylinders (b)Union of cylinders Design databases also store non-spatial information about objects(e.g., construction material,color,etc.) Spatial integrity constraints are important. E.g.,pipes should not intersect,wires should not be too close to each other.etc. 13 Database System Concepts,5th Ed. 24.13 @Silberschatz,Korth and SudarshanDatabase System Concepts, 5 24.13 ©Silberschatz, Korth and Sudarshan th Ed. 13 Representation of Geometric Constructs Design databases also store non-spatial information about objects (e.g., construction material, color, etc.) Spatial integrity constraints are important. E.g., pipes should not intersect, wires should not be too close to each other, etc. (a) Difference of cylinders (b) Union of cylinders