Building separate tables for every relationship (1:1, 1:N and M:N) does not violate any of the rules for building a well-structured database. Why then do you think that REA data modelers recommend building separate tables only for M:N relationships and using foreign keys to implement 1:1 and 1:N relationships?
Answer to relevant QuestionsAssume that there exists a 1:1 relationship between the Receive Inventory and Disburse Cash events. How does the manner in which the relationship between the two events is implemented (i.e., in which table a foreign key is ...Develop a set of tables to implement the integrated REA diagram you developed in Problem 18.1 for Joe’s ice-cream shop in a relational database. Specify a primary key for each table, and suggest at least one other ...Refer to Figure and Table to write the query logic needed to answer the following questions. (Optional: If requested by your instructor, write your queries in SQL or a Query-By-Example graphical interface.) Some answers may ...How are the similarities and differences between the purchase of services, such as telephone service, and the purchase of raw materials reflected in an REA data model?Small contractors often rent special equipment for specific jobs. They need to track the equipment that is rented, when it is returned, and payments made to the rental company.REQUIREDa. Draw a partial REA diagram for the ...
Post your question