Learning Objectives
5 objectives- Understand fundamental database concepts, types, and their significance in information systems.
- Explain the principles of relational databases, including normalization and SQL querying.
- Design databases using entity-relationship modeling and ensure data integrity.
- Implement data manipulation using SQL and optimize queries for performance.
- Apply database security, backup strategies, and administration best practices.
Content Outline
PreviewUnit 279: Database Systems and Management
1. Introduction to Databases
- Definition and purpose of databases
- Types of databases
- Hierarchical
- Network
- Relational
- NoSQL (brief overview)
- Importance of databases in modern information management
- Overview of database applications in different industries
2. Relational Database Management Systems (RDBMS)
- Principles of RDBMS
- Tables, rows, and columns
- Keys: primary, foreign, candidate
- Relational model concepts
- Normalization
- Purpose and benefits
- Normal forms (1NF, 2NF, 3NF)
- Introduction to SQL
- Role and capabilities
- Basic SQL syntax overview
3. Database Design Principles
- Database design process
- Requirements gathering
- Conceptual design
- Logical design
- Physical design
- Entity-Relationship (ER) Modeling
- Entities, attributes, relationships
- Cardinality and participation
- Schema design
- Data integrity
- Entity integrity
- Referential integrity
- Importance of normalization in design
4. Data Manipulation and Querying
- SQL Data Manipulation Language (DML)
- SELECT statements
- INSERT, UPDATE, DELETE operations
- Querying techniques
- Filtering data with WHERE clause
- Sorting data with ORDER BY
- Joins
- INNER JOIN
- LEFT, RIGHT, FULL OUTER JOIN
- CROSS JOIN
- Aggregate functions
- COUNT, SUM, AVG, MIN, MAX
- Grouping data with GROUP BY and HAVING
5. Database Security and Backup Strategies
- Database security fundamentals
- Threats and vulnerabilities
- User authentication and authorization
- Implementing user access controls
- Encryption techniques
- Data-at-rest
- Data-in-transit
- Backup strategies
- Full, incremental, and differential backups
- Backup scheduling
- Recovery procedures
- Point-in-time recovery
- Disaster recovery planning
6. Data Modeling and Entity-Relationship Diagrams (ERDs)
- Principles of data modeling
- Creating ERDs
- Identifying entities and attributes
- Defining relationships and cardinalities
- Translating ERDs into relational schemas
- Case study/example design
7. Indexing and Performance Tuning
- Importance of indexing in databases
- Types of indexes
- B-tree index
- Hash index
- Composite index
- Index creation and maintenance
- Query optimization techniques
- Using EXPLAIN plans
- Avoiding common pitfalls
- Performance tuning best practices
8. Transactions and Concurrency Control
- Concepts of database transactions
- ACID properties
- Atomicity
- Consistency
- Isolation
- Durability
- Isolation levels
- Read uncommitted, Read committed
- Repeatable read, Serializable
- Concurrency control techniques
- Locking mechanisms
- Deadlock detection and resolution
9. Database Administration and Maintenance
- Role and responsibilities of a Database Administrator (DBA)
- Database monitoring
- Performance metrics
- Resource usage
- Routine maintenance tasks
- Backup verification
- Rebuilding indexes
- Updating statistics
- Backup and recovery procedures
- Ensuring database availability and health
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