Beginning Database with Postgre
sql reading notebook 1 flat files : repeating groups spreadsheets : can not support multiuser access ; strict two deminsions basic rules for designing tables : 1. break down the data into columns 2. have a unique way of identify each row 3. remove repeating @R_472_
4045@ion 4. get the naming right with n2n relationship create a third table bettwen the two tables Date Types : serial,char,varchar,date,numeric specially notice the NULLs
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