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Database Systems: Design, Implementation, and Management

Comprehensive study of database architecture and administration

Ethan Howard
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Week 2Database Systems: Design, Implementation, and ManagementExplain the key concepts and components of the relational database model as outlined in Chapter3. Discuss the role of tables, keys, and relational set operators in a relational database. Describethe different types of relationships in relational modeling, and how data redundancy and integrityare managed. Additionally, explain the importance of indexes and the data dictionary in thecontext of relational databases.Word count requirement: 1000-1200 words.Chapter 3The relational database modelA Logical View of Data-Relational model: view data logically rather than physically-Table: Structural and data independence; resembles a file conceptually-Relational database model is easier to understand and hierarchical-Logical vie of relational database is based on relation: Relational thought of as a table-Table: two dimensional structure composed of rows and columns-Persistent representation of logical relation-Contains group of related entities (entity set)Keys-Each row in a table must be uniquely identifiable-Key: one or more attributes that determine other attributes

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