Database Systems Study Guide
A standard undergraduate database systems course: relational data model, SQL (DDL, DML, queries, joins, subqueries, aggregation), entity-relationship modeling, normalization (1NF through BCNF), transaction management, indexing and query optimization, NoSQL concepts, and database application development.
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12 Topics Covered
Database Concepts and Architecture
Covers DBMS vs file systems, three-level architecture, data independence, and database users for foundational exam questions.
The Relational Model
Explores relations, tuples, attributes, keys, and integrity constraints essential for theoretical exam problems.
Relational Algebra
Covers select, project, join, and set operations forming the theoretical basis for SQL exam queries.
SQL Data Definition Language
Teaches CREATE, ALTER, DROP statements, constraints, indexes, and views for schema design exam questions.
SQL Queries and Data Manipulation
Covers SELECT, joins, subqueries, aggregates, and DML statements comprising major exam query-writing sections.
Entity-Relationship Modeling
Teaches ER diagrams, cardinality, participation, weak entities, and EER for database design exam problems.
ER-to-Relational Mapping
Covers converting ER diagrams to relational schemas, a frequent exam exercise testing design skills.
Functional Dependencies and Normalization
Explores FDs, normal forms through BCNF, and decomposition techniques for critical exam normalization problems.
Transaction Management and Concurrency Control
Covers ACID properties, serializability, locking protocols, and isolation levels for transaction analysis questions.
Storage, Indexing, and Query Optimization
Teaches B+ trees, hashing, file organization, and query plans for performance-focused exam questions.
NoSQL and Modern Database Systems
Covers CAP theorem, document/key-value/graph databases, and relational comparison for contemporary exam topics.
Database Security and Application Development
Explores SQL injection prevention, access control, stored procedures, and connectivity for practical exam scenarios.
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