Create a trigger called Trig_Enroll_BI on the ENROLLMENT table that fires before an INSERT statement. The trigger must generate a proper error message if the student id or section id or both invalid. Test your code for all possible options. Make sure that all columns that have NOT NULL values (Use system date for all date fields, user id for all created and modified by fields). Display the inserted record from the ENROLLMENT table after a successful enrollment transaction.
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SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
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A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
Create a trigger called Trig_Enroll_BI on the ENROLLMENT table that fires before an INSERT statement. The trigger must generate a proper error message if the student id or section id or both invalid. Test your code for all possible options. Make sure that all columns that have NOT NULL values (Use system date for all date fields, user id for all created and modified by fields). Display the inserted record from the ENROLLMENT table after a successful enrollment transaction.
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