Database Design Semester 1 Study Guide
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Questions and Answers

What is the duration of the final exam in the course?

  • 2 hours and 15 minutes (correct)
  • 3 hours
  • 2 hours and 30 minutes
  • 2 hours

Which topics are included in Section A of the final exam?

  • Weak Entities and Normalization
  • Conceptual Modelling and SQL (correct)
  • Database Planning and Relational Calculus
  • Relational Algebra and SQL

What is NOT a requirement listed for the final exam resources?

  • Sharpener
  • Punctuality
  • Pens
  • Graphing calculator (correct)

In the context of database design, what do weak entities typically need?

<p>A strong entity for identification (A)</p> Signup and view all the answers

Which of the following is NOT an operation in Relational Algebra?

<p>Create (D)</p> Signup and view all the answers

What type of key ensures referential integrity in a relational database?

<p>Foreign key (C)</p> Signup and view all the answers

What is the main focus of the Database Development Life Cycle (DDLC)?

<p>Strategic planning of database systems (D)</p> Signup and view all the answers

Which of the following is a characteristic of a conceptual data model?

<p>It includes attributes and relationships. (D)</p> Signup and view all the answers

Flashcards

Conceptual Data Model

A high-level representation of data, showing entities, attributes, and relationships without getting into specifics of a particular database system.

Entity

A person, place, object, event, or concept for which data is collected and stored. A building block of the data model.

Attribute

A characteristic or property of an entity. Example: Name, Address, etc. for a Student entity.

Relationship

An association between two or more entities. Shows how entities relate. For instance, a teacher teaches multiple courses.

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Relational Model

A way to structure a database as tables of data and relationships defined by keys.

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Normalization

The process of organizing data in a database to reduce redundancy and improve data integrity.

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DDL

Data Definition Language. Used to create, alter, and delete tables within the database.

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Primary Key

A column or group of columns in a database table that uniquely identifies each row in the table.

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Study Notes

Database Design

Course Update

  • Week 13
  • Lecture Test 2: Thursday, November 21, 4:30 PM - 6:00 PM
  • Lab Test: Week of November 18
  • Exam Update

Final Exam - Study Guide

  • Duration: 2 hours and 15 minutes
  • Questions required: Four (4)
  • Number of sections: Three (3)
    • Section A: 60 points, 2 questions on conceptual modelling and SQL
    • Section B and C: 20 points each, 1 question to choose from 2

Resources

  • Good pencil (more than one)
  • Sharpener
  • Ruler
  • Eraser
  • Pens
  • ID
  • Punctuality
  • Brain

Topics - Unit Three: Conceptual Data Modelling

  • Only the notation used in the lecture is accepted.
  • Identify and use constructs in the design of a conceptual data model, such as:
    • Object/entity
    • Weak entities
    • Strong entities
    • Relationships (weak and strong)
    • Attributes
    • Aggregates
    • Generalization and specialization
    • Participation of relationships
    • Cardinalities

Topics - Unit Four: Relational Database Model

  • Convert a conceptual model into a relational model normalized to at least Fourth Normal Form using conversion rules.
  • Topics include:
    • Entity integrity
    • Referential integrity
    • Foreign keys
    • Primary keys
    • Composite, candidate, super keys

Topics - Unit Seven: Introduction to SQL

  • Topics for this unit are:
    • DDL (Data Definition Language): create table, alter table, etc.
    • DMLs (Data Manipulation Language): update, delete, select, etc. for multiple tables
    • Joins and sub-queries
    • Views
    • Aggregate functions (max, min, avg)

Topics - Unit Two: Database Planning and the DDL

  • Notes are on Moodle
  • Topics include:
    • Strategic Database Planning: description, purpose, and relevance
    • The Database Development Life Cycle methodology
    • The ANSI/SPARC three-level database architecture
    • Understanding basic characteristics of conceptual data models (Network, Relational, Object-Oriented, Hierarchical)

Topics - Unit Five: Relational Algebra and Relational Calculus

  • Relational Calculus is not tested.
  • Relational Algebra operations: union, intersection, difference, product, select, project, join (natural, theta, outer), rename, assignment.
  • Formulate solutions to specific queries using Relational Algebra.

Topics - Unit Six: Alternatives to Databases

  • Understand the different types of data (structured, semi-structured, unstructured) and examples.
  • Characteristics of NOSQL and RDBMS, advantages and disadvantages of each.
  • Use JSON and XML to represent given sets of data.

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Prepare for your Database Design Semester 1 final exam with this comprehensive study guide. It includes essential topics on conceptual data modeling, SQL, and various entities and relationships crucial for your understanding. Make sure to review the required materials to excel in the upcoming tests.

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