A bank provides services to customers. The banks is identified by its code and has a name and an address. The bank has several branches. A branch is identified by its code that is unique for a given bank. The branch name and address are also stored in the database. Customers deal with the bank through the bank branches. So, a customer belongs to a specific bank branch. Customers either open bank accounts (CURRENT, SAVINGS, etc.) or receive bank loans (DIRECT, INDIRECT, etc.) from the bank. The bank stores customer info namely: EID, name, phone, and address. The bank also keeps track of customers’ loans and accounts. Information stored about loans include loan no, amount, and type. Account information stored is account no, balance, and type. The address information stored for any entity includes street number, street name, PO Box, city, and emirate. Draw an ER diagram representing the needed database

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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.