TopText Publishing is a textbook publishing company with a headquarters location, a warehouse, and three sales offices that each has a sales manager and sales reps. TopText sells to schools, colleges,and individual customers. Many authors write more than one book for TopText, and more than one author writes some books. TopText maintains an active list of more than 100 books, each identified by a universal code called an ISBN. How would you draw an ERD for the TopText information system, including cardinality notation?

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Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.