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Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
Home based assignment Consider an ORDER table with the following attributes: • Order Number (ONo),Customer Number (CNo),Customer Name (CNa),Item Number (INo),Unit Price (UP), Quant
Define data model? A data model is a collection of conceptual tools for explaining data, data relationships, data semantics and consistency constraints.
With the linear commit protocol, sites are connected in a chain, and the subtransaction at the left-hand end of the chain initiates the protocol. Propose a crash recovery protocol
Derived horizontal fragmentation: Some applications may include a join of two or more relations. If the relations are stored at dissimilar locations, there may be a major overhead
Describe the responsibilities of the DBA and the database designer ? The responsibilities of DBA and database designer are: 1. Planning for the database's future storage needs
Homework chapter 10 no 3
Timestamps For Read operations: If TS (T) If TS (T) >= W-timestamp (Q), then the transaction T is trying to read a value of data item Q which has been written and committed
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
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