

1. Explain total participation and partial participation in ER diagram. 2. Explain disjointness constraints and co...
Let us use the conceptual schema diagram below to answer the question parts. It is about a database for banks and their branches. BANK HAS BANK BRANCH Code Name Addr Addr Branch_no Acct_no Loan_no ISSUES ACCTS ISSUES LOANS Balance Type Type Amount 0: n 0: n Name Phone CUSTOMER Addr Ssn
This is how i mapped the relational schema diagram. would this
be correct? i feel like i am missing something.
ud bundle at the start of the class on the due date. ment. 1. (10 pts) Use the ER-to-relational mapping algorithm to map the BANK ER diagram to a relational schema diagram. Prepare the diagram using ERDPlus and make sure to specify all primary keys and foreign keys. (Position the relations so that the arcs from the foreign keys to...
2. Design an ER-diagram for a bank that implements the following requirements. The database you design should store information about customers, accounts, branches and employees • Customer: Customers are identified by their SSN. For each customer we store a name, multiple phone numbers (one or more), and an occupation. • Account: Accounts are identified by an account number and the branch they belong to. For each account we store a balance and the type of account (e.g., savings). – An...
c) Write an ER Diagram for the following Library database. Identify all the Entities, Relationships and Attributes. Underline the primary keys and mark the different constraints. You can add an I attribute as a primary key for an entity to make t unique if necessary. Library has a number of branches in the city, each branch having a name, address and librarian. Books have title, authors and publisher. A book can have multiple authors but a single publisher. Note that same...
Q1.a) Based on the business rules, you are expected to construct
an Entity-Relationship (ER) diagram. The ER diagram should include
entities, attributes (if there are less than three specified in the
business statements, please add some extra attributes), identifiers
and corresponding data types, the relationships among entities with
cardinality and associative entities.
.b) Extend Q1.a) to apply generalization/specialization
technique to construct an Enhanced-ER (EER) diagram. The EER
diagram should specify the complete (total) and disjoint
(mutuallyexclusive) constraints on the
generalization/specialization....