Initial commit

src/roadmaps/aspnet-core/content/102-database-fundamentals/102-stored-procedures.md

@@ -5,3 +5,5 @@ A stored procedure is a pre-compiled collection of SQL statements that can be ex
 Visit the following resources to learn more:
 
 - [Stored Procedure Tutorial](https://www.w3schools.com/sql/sql_stored_procedures.asp)
+- [Stored Procedure in SQL: Benefits And How to Create It](https://www.simplilearn.com/tutorials/sql-tutorial/stored-procedure-in-sql)
+- [SQL Server stored procedures for beginners](https://www.sqlshack.com/sql-server-stored-procedures-for-beginners/)

src/roadmaps/aspnet-core/content/102-database-fundamentals/103-constraints.md

@@ -5,3 +5,5 @@ Database constraints are rules that are used to limit the data that can be store
 Visit the following resources to learn more:
 
 - [SQL Constraints](https://www.w3schools.com/sql/sql_constraints.asp)
+- [Constraints of SQL](https://www.educative.io/courses/database-design-fundamentals/m7JnY9Xm6Qp)
+- [Constraints in DBMS](https://beginnersbook.com/2015/04/constraints-in-dbms/)

src/roadmaps/aspnet-core/content/102-database-fundamentals/104-triggers.md

@@ -1 +1,14 @@
 # Triggers
+
+Triggers are special type of stored procedures that are automatically executed in response to specific events that occur within a database. These events can include:
+
+- Data modification events (INSERT, UPDATE, DELETE) on a specific table or view.
+- Data definition events (CREATE, ALTER, DROP) on specific database objects such as tables or views.
+- Logon events (CONNECT, DISCONNECT) that occur when a user connects to or disconnects from the database.
+
+For more information, visit the following links:
+
+- [Database Triggers](https://docs.oracle.com/cd/A57673_01/DOC/server/doc/SCN73/ch15.htm)
+- [Database Triggers: Examples & Overview](https://study.com/academy/lesson/database-triggers-examples-overview.html)
+- [What are Triggers in SQL?](https://www.edureka.co/blog/triggers-in-sql/)
+- [What is a SQL Trigger?](https://www.essentialsql.com/sql-trigger/)