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8.1 Introduction to Database Functions
What is Functions?
Overview of the course objectives and topics
Importance of functions in database management
Introduction to the concept of functions in relational databases
8.2 Understanding Database Functions
Definition of a database function and its purpose
Different types of functions: scalar functions, table-valued functions, and aggregate functions
Advantages and limitations of using functions in database systems
8.3 Scalar Functions
Introduction to scalar functions and their use cases
Syntax and semantics of creating scalar functions in SQL
Implementing basic arithmetic, string manipulation, and date/time functions
8.4 Table-Valued Functions
Understanding table-valued functions and their use cases
Creating inline table-valued functions and multi-statement table-valued functions
Using table-valued functions to return result sets from complex queries
8.5 Aggregate Functions
Overview of aggregate functions and their role in data summarization
Syntax and semantics of creating aggregate functions in SQL
Implementing common aggregate functions such as SUM, AVG, COUNT, MAX, MIN
8.6 Built-In Functions
Exploring built-in functions provided by the database management system
Reviewing common built-in functions for string manipulation, date/time operations, and mathematical calculations
Understanding the usage and behavior of built-in functions
8.7 User-Defined Functions (UDFs)
Introduction to user-defined functions and their benefits
Creating and using user-defined functions in SQL
Implementing custom business logic with UDFs
8.8 Modifying Functions
Altering existing functions to change their structure or behavior
Adding or removing parameters or procedural logic
Dropping functions from the database schema
8.9 Calling Functions
Techniques for invoking functions from queries, stored procedures, or other functions
Passing input parameters and retrieving output values
Handling errors and exceptions during function execution
8.10 Security and Authorization
Managing access control for functions
Granting and revoking privileges on functions
Implementing function security best practices
8.11 Performance Optimization
Analyzing the performance impact of functions on query execution
Identifying and optimizing performance bottlenecks in function calls
Best practices for designing efficient and scalable functions
8.12 Advanced Function Concepts
Advanced function features such as recursive functions and window functions
Using functions for complex data transformations and analytics
Real-world use cases and case studies demonstrating advanced function usage
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