Table Hierarchy Name Description Names Level CUSTOMERS 1 DANDY, JIM SALES 2 RING SALES 2 SPATS SALES 2 GOLF CLUBS SALES 2 WALKING STICK SALES 2 JEWELRY SALES 2 SHIRT SALES 2 SPATS SALES 2 CUFF LINKS SALES 2 ROSES CUSTOMERS 1 MARVEL, CAPTAIN SALES 2 GOLF CLUBS SALES 2 RED SUIT SALES 2 RED SUIT SALES 2 RED SUIT CUSTOMERS 1 SMITH, BOB SALES 2 CLOCK SALES 2 AUTOMOBILE SALES 2 JET PLANE SALES 2 CAMPER TRUCK CUSTOMERS 1 STRONG, BARBARA SALES 2 WEIGHTS SALES 2 DRESS SALES 2 TENNIS RACKET CUSTOMERS 1 WHITE, PERRY SALES 2 BOOZE SALES 2 WINE SALES 2 WINE SALES 2 WINE SALES 2 GOLF CLUBS CUSTOMERS 1 WOMAN, WONDER SALES 2 DRESS SALES 2 CLOCK SALES 2 DRESS SALES 2 GOLDEN ROPE SALES 2 DRESS SALES 2 MAKE UP SALES 2 DRESS SALES 2 JEWELRY SALES 2 AUTOMOBILE
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This is a two level hierarchy with CUSTOMERS records at level 1, and the SALES
records at level 2.
We could have displayed any field from the data records, but chose to display just NAME from the CUSTOMERS record and the DESCR field from the SALES record. To reinforce the nature of this hierarchy we also show the Table names from which the data came, and the Hierarchy Level . The Package of Information is from one level 1 record to the next level 1 record. The packages were formed by the "CUSTOMERS SALES OVER CUST#" part of the RELATE command, then they were rearranged into name order by the "PRESENT BY NAME" clause. The above illustrates and defines what we mean by Hierarchy Level and Package of Information. These two concepts are used elsewhere in this documentation, so it is important that you know what they are. |
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