OracleDB Tutorials

Oracle Database Tutorials Roadmap

Section 1: Introduction to Oracle Database

  • What is Oracle Database?
    • A relational database management system (RDBMS).
    • Known for its robustness, scalability, and features for enterprise applications.
  • Why Learn Oracle Database?
    • Widely used in large organizations.
    • High demand for Oracle database professionals.
    • Rich feature set for complex data management.
  • Database Concepts Review:
    • Relational model, tables, rows, columns.
    • Primary keys, foreign keys.
    • Normalization.
  • Setting up Your Environment:
    • Installing Oracle Database (Express Edition is a good starting point).
    • Using SQL Developer or other client tools.
    • Connecting to the database.

Section 2: SQL Fundamentals (Structured Query Language)

  • Introduction to SQL:
    • The standard language for interacting with relational databases.
    • DML (Data Manipulation Language), DDL (Data Definition Language), DCL (Data Control Language), TCL (Transaction Control Language).
  • Data Retrieval (SELECT):
    • Selecting columns and rows.
    • Filtering data with WHERE clause.
    • Sorting data with ORDER BY.
    • Limiting results.
  • Data Manipulation (INSERT, UPDATE, DELETE):
    • Adding new data.
    • Modifying existing data.
    • Removing data.
  • Working with Data Types:
    • Common Oracle data types (VARCHAR2, NUMBER, DATE, etc.).
  • Functions:
    • Single-row functions (string, numeric, date, conversion).
    • Group functions (AVG, SUM, COUNT, MAX, MIN).
  • Grouping Data:
    • GROUP BY clause.
    • Filtering groups with HAVING clause.
  • Joining Tables:
    • Inner joins, outer joins (LEFT, RIGHT, FULL).
    • Self joins.
  • Subqueries:
    • Single-row, multiple-row, multiple-column subqueries.
    • Correlated subqueries.
  • Set Operators:
    • UNION, UNION ALL, INTERSECT, MINUS.

Section 3: Database Objects and Schema Management

  • Creating and Managing Tables:
    • CREATE TABLE, ALTER TABLE, DROP TABLE.
    • Constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, CHECK).
  • Indexes:
    • Understanding indexes and their purpose.
    • Creating and dropping indexes.
  • Views:
    • Creating and using views.
    • Updatable views.
  • Sequences:
    • Creating and using sequences for generating unique numbers.
  • Synonyms:
    • Creating and using synonyms for object aliases.

Section 4: Transaction Management and Concurrency

  • Understanding Transactions:
    • ACID properties (Atomicity, Consistency, Isolation, Durability).
  • Transaction Control Language (TCL):
    • COMMIT, ROLLBACK, SAVEPOINT.
  • Locking:
    • Understanding different types of locks.
    • Dealing with deadlocks.

Section 5: Introduction to PL/SQL (Procedural Language/SQL)

  • What is PL/SQL?
    • Oracle's procedural extension to SQL.
    • Allows for programming logic within the database.
  • PL/SQL Block Structure:
    • DECLARE, BEGIN, EXCEPTION, END.
  • Variables and Data Types:
    • Declaring variables.
    • PL/SQL data types.
  • Control Structures:
    • Conditional statements (IF, CASE).
    • Loops (LOOP, WHILE, FOR).
  • Cursors:
    • Implicit and explicit cursors.
    • Processing multiple rows.
  • Error Handling:
    • Using the EXCEPTION section.
    • Predefined and user-defined exceptions.

Section 6: Stored Procedures and Functions

  • Creating and Executing Stored Procedures:
    • Reusable blocks of PL/SQL code.
    • Using parameters (IN, OUT, IN OUT).
  • Creating and Using Functions:
    • Returning a single value.
    • Functions in SQL statements.
  • Packages:
    • Grouping related procedures, functions, and variables.
    • Package specification and body.

Section 7: Triggers

  • Understanding Triggers:
    • PL/SQL blocks that execute automatically in response to database events (INSERT, UPDATE, DELETE).
  • Types of Triggers:
    • Row-level and statement-level triggers.
    • BEFORE and AFTER triggers.
  • Creating and Managing Triggers:
    • CREATE TRIGGER, ALTER TRIGGER, DROP TRIGGER.

Section 8: Database Administration Basics (DBA)

  • User Management:
    • Creating users (CREATE USER).
    • Granting and revoking privileges (GRANT, REVOKE).
    • Roles.
  • Storage Management:
    • Tablespaces and data files.
    • Understanding storage structures.
  • Backup and Recovery (Introduction):
    • Logical and physical backups.
    • Introduction to RMAN (Recovery Manager).
  • Performance Tuning (Introduction):
    • Understanding execution plans.
    • Basic tuning techniques.

Section 9: Advanced SQL and PL/SQL Topics

  • Analytic Functions:
    • Window functions (RANK, DENSE_RANK, ROW_NUMBER, etc.).
    • Partitioning and ordering data.
  • Common Table Expressions (CTEs):
    • Using the WITH clause for reusable subqueries.
  • Hierarchical Queries:
    • Using CONNECT BY and START WITH.
  • Advanced PL/SQL Concepts:
    • Collections (arrays, nested tables).
    • Records.
    • Dynamic SQL (EXECUTE IMMEDIATE).

Section 10: Oracle Specific Features (Overview)

  • flashback Technology:
    • Querying historical data.
  • Materialized Views:
    • Storing precomputed results.
  • Partitioning:
    • Dividing large tables for performance and manageability.

Section 11: Working with Applications and Other Technologies

  • Connecting to Oracle from Applications:
    • Using database drivers for different programming languages (Java, Python, Node.js, etc.).
  • Integration with Other Tools:
    • ETL tools, reporting tools.

Section 12: Further Learning and Specialization

  • Oracle Certification Paths:
    • Associate, Professional, Master level certifications.
  • Specialized Areas:
    • Performance Tuning (Deep Dive).
    • Database Security.
    • High Availability (RAC, Data Guard).
    • Cloud Database Services (Oracle Cloud Infrastructure - OCI).
    • NoSQL and other database types in the Oracle ecosystem.
  • Resources for Continued Learning:
    • Oracle Documentation (docs.oracle.com).
    • Oracle Learning Library.
    • Online courses and training providers.
    • Community forums and user groups.