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Course Outline
Relational database models
- The structure of a relational database
- Types of table relationships
- Database normalization and denormalization
- Relational operators
Retrieving Data
- Rules for writing SQL queries
- SELECT statement syntax
- Selecting all columns
- Queries involving arithmetic operations
- Column aliases
- Literals
- Concatenation operator
Limiting Results
- The WHERE clause
- Comparison operators
- LIKE condition
- BETWEEN ... AND condition
- IS NULL condition
- IN condition
- Boolean operators: AND, OR, and NOT
- Using multiple conditions in the WHERE clause
- Operator precedence
- 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 conversions
- Conversion functions
- Nesting functions
- Testing function performance using the DUAL table
- Obtaining the current date using the SYSDATE function
- Handling NULL values
Aggregating Data Using Grouping
- Aggregate functions
- How aggregate functions handle NULL values
- Creating data groups: the GROUP BY clause
- Grouping by multiple columns
- Limiting group function results: 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 in the SELECT command
- Single-line and multi-line subqueries
- Operators for single-line subqueries
- Aggregate functions within subqueries
- Operators for multi-line subqueries: IN, ALL, ANY
- How NULL values are handled 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
- Data types available for columns
- DEFAULT option
- NULL and NOT NULL options
Managing Tables
- Referential integrity: CHECK, PRIMARY KEY, FOREIGN KEY, UNIQUE
- Creating a table via a query
- Deleting a table: 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
