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Course Outline
Relational Database Models
- Structure of a relational database
- Table relationship types
- Database normalization and denormalization
- Relational operators
Data Retrieval
- Rules for writing SQL queries
- Syntax for the SELECT statement
- Selecting all columns
- Queries involving arithmetic operations
- Column aliases
- Literals
- Concatenation operator
Limiting Results
- The WHERE clause
- Comparison operators
- The LIKE condition
- The BETWEEN ... AND condition
- The IS NULL condition
- The IN condition
- Boolean operators: AND, OR, and NOT
- Multiple conditions in the WHERE clause
- Operator precedence
- The DISTINCT clause
Sorting Data
- The ORDER BY clause
- Sorting by multiple columns or expressions
SQL Functions
- Differences between single-row and multi-row functions
- Text, numeric, and date functions
- Explicit and implicit data conversion
- Conversion functions
- Nested functions
- Testing function performance using the DUAL table
- Retrieving the current date using the SYSDATE function
- Handling NULL values
Aggregating Data Using Grouping
- Grouping functions
- How grouping functions handle NULL values
- Creating data groups using the GROUP BY clause
- Grouping by multiple columns
- Restricting grouped function results using the HAVING clause
Retrieving Data from Multiple Tables
- Types of joins
- Using NATURAL JOIN
- Table aliases
- Joins within the WHERE clause
- INNER JOIN
- Outer joins: LEFT, RIGHT, and FULL OUTER JOIN
- Cartesian product
Subqueries
- Placing subqueries within the SELECT command
- Single-row and multi-row subqueries
- Operators for single-row subqueries
- Using grouping functions in subqueries
- Operators for multi-row subqueries: IN, ALL, and ANY
- Handling of NULL values in subqueries
Set Operators
- UNION operator
- UNION ALL operator
- INTERSECT operator
- MINUS operator
Inserting, Updating, and Deleting Data
- INSERT command
- Copying data from another table
- UPDATE command
- DELETE command
- TRUNCATE command
Transactions
- Commands: COMMIT, ROLLBACK, and SAVEPOINT
DDL Commands
- Main database objects
- Rules for naming objects
- Creating tables
- Available data types for columns
- DEFAULT option
- NULL and NOT NULL options
Managing Tables
- Referential integrity: CHECK, PRIMARY KEY, FOREIGN KEY, UNIQUE
- Creating a table via query
- Dropping a table using DROP TABLE
- DESCRIBE command
Other Schema Objects
- Sequences
- Synonyms
- Views
Requirements
- Basic computer literacy
- Familiarity with any operating system
21 Hours
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
