tables created for master data
a. P table - Time independent master data attributes
b. Q table - Time dependent master data attributes
c. M view - Combines P and Q
d. X table - Interface between master data SIDs and time independent navigational attributes SIDs ( P is linked to the X table)
e. Y table - Interface between master data SIDs and time dependent navigational attributes SIDs (Q is linked to the Y table)


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