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Duration 21 hours
Course Outline
Relational Database Models
- Architecture of relational databases
- Types of table relationships
- Concepts of database normalization and denormalization
- Relational operators
Data Retrieval
- Standards for writing SQL queries
- SELECT statement syntax
- Retrieving all columns
- Performing arithmetic operations in queries
- Using column aliases
- Working with literals
- Using the concatenation operator
Filtering Results
- The WHERE clause
- Comparison operators
- LIKE condition
- BETWEEN ... AND condition
- IS NULL condition
- IN condition
- Boolean operators: AND, OR, and NOT
- Combining multiple conditions in the WHERE clause
- Operator precedence
- The DISTINCT clause
Data Sorting
- The ORDER BY clause
- Sorting by multiple columns or expressions
SQL Functions
- Differences between single-row and multi-row functions
- Text, numeric, and date function features
- Explicit and implicit data conversion
- Conversion functions
- Nesting functions
- Testing function performance using the dual table
- Retrieving the current date with the SYSDATE function
- Managing NULL values
Aggregating Data via Grouping
- Aggregate functions
- How aggregate functions handle NULL values
- Creating data groups with the GROUP BY clause
- Grouping by multiple columns
- Filtering grouped results with the HAVING clause
Fetching Data from Multiple Tables
- Types of joins
- Using NATURAL JOIN
- Table aliases
- Joins specified in the WHERE clause
- INNER JOIN
- Outer joins: LEFT, RIGHT, and FULL OUTER JOIN
- Cartesian product
Subqueries
- Incorporating subqueries into the SELECT command
- Single-row and multi-row subqueries
- Operators for single-row subqueries
- Grouping within subqueries
- Operators for multi-row subqueries: IN, ALL, ANY
- Treatment of NULL values in subqueries
Set Operators
- UNION operator
- UNION ALL operator
- INTERSECT operator
- MINUS operator
Data Manipulation: Insert, Update, and Delete
- INSERT command
- Copying data from another table
- UPDATE command
- DELETE command
- TRUNCATE command
Transactions
- COMMIT, ROLLBACK, and SAVEPOINT commands
DDL Commands
- Core database objects
- Object naming conventions
- Creating tables
- Available data types for columns
- DEFAULT option
- NULL and NOT NULL constraints
Table Management
- Referential integrity: CHECK, PRIMARY KEY, FOREIGN KEY, and UNIQUE constraints
- Creating tables from queries
- Dropping tables with DROP TABLE
- DESCRIBE command
Other Schema Objects
- Sequences
- Synonyms
- Views
Requirements
- Basic computer proficiency
- Familiarity with common operating systems
Testimonials (6)
it was structured very well both by days and by modules, easy to follow
Melania - DB Global Technology SRL
Course - Oracle SQL for beginners
I liked the way the trainer explained the information about the topics and the fact that he paid attention to the details so that the lessons were very practical and logical.
Andreea
Course - Oracle SQL for beginners
the trainer give more examples for each chapter
Corina
Course - Oracle SQL for beginners
the interactive exercises
BOANGIU GIORGIANA
Course - Oracle SQL for beginners
the explanations
Daniela
Course - Oracle SQL for beginners
the exercises
