- How do I create a stored procedure?
- What is debugging of a program?
- How do you run a procedure?
- What is function in PL SQL with examples?
- What are the four steps of debugging?
- What happens during debugging?
- How do you trigger a database?
- How do I view stored procedures in PL SQL Developer?
- How do I enable debug in SQL Developer?
- How do database triggers work?
- What is trigger in database with example?
- How do I test a procedure in PL SQL?
- How does PL SQL work?
- What are the types of debugging?
- What is trigger and why it is used?
- How do I run a PL SQL procedure in SQL Developer?
- How do I run a selected query in PL SQL?
How do I create a stored procedure?
How to Create a Stored ProcedureIn Object Explorer, connect to an instance of Database Engine and then expand that instance.Expand Databases, expand the AdventureWorks2012 database, and then expand Programmability.Right-click Stored Procedures, and then click New Stored Procedure.More items…•.
What is debugging of a program?
Definition: Debugging is the process of detecting and removing of existing and potential errors (also called as ‘bugs’) in a software code that can cause it to behave unexpectedly or crash. … Sometimes it takes more time to debug a program than to code it.
How do you run a procedure?
When a procedure is called by an application or user, the Transact-SQL EXECUTE or EXEC keyword is explicitly stated in the call. Alternatively, the procedure can be called and executed without the keyword if the procedure is the first statement in the Transact-SQL batch.
What is function in PL SQL with examples?
A stored function (also called a user function or user-defined function) is a set of PL/SQL statements you can call by name. Stored functions are very similar to procedures, except that a function returns a value to the environment in which it is called.
What are the four steps of debugging?
The basic steps in debugging are:Recognize that a bug exists.Isolate the source of the bug.Identify the cause of the bug.Determine a fix for the bug.Apply the fix and test it.
What happens during debugging?
Running an app within a debugger, also called debugging mode, means that the debugger actively monitors everything that’s happening as the program runs. It also allows you to pause the app at any point to examine its state, and to then step through your code line by line to watch every detail as it happens.
How do you trigger a database?
A database trigger is special stored procedure that is run when specific actions occur within a database. Most triggers are defined to run when changes are made to a table’s data. Triggers can be defined to run instead of or after DML (Data Manipulation Language) actions such as INSERT, UPDATE, and DELETE.
How do I view stored procedures in PL SQL Developer?
You can use the connections tab which is in the left side of sql developer. Browse to the connection name in the connections tab, expand the required object and just click, it will open the code in new tab.
How do I enable debug in SQL Developer?
SQL Developer’s default “debug” action is to run until a breakpoint occurs. You can change this by going to Tools > Preferences, and clicking Debugger. Change the option that says “Start Debugging Option” to Step Into. This will allow you to click Debug and run to the first line of code.
How do database triggers work?
A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database.
What is trigger in database with example?
Trigger: A trigger is a stored procedure in database which automatically invokes whenever a special event in the database occurs. For example, a trigger can be invoked when a row is inserted into a specified table or when certain table columns are being updated.
How do I test a procedure in PL SQL?
The third section is easy to create, simply open the Test or Debug dialog of the PL/SQL Procedure. An EXCEPTION variable is declared on line 22 below….Writing a Unit TestDescribe unit test.DELETE and INSERT test data.Initialize and call the PL/SQL Procedure.Assert test results and record the results.
How does PL SQL work?
PL/SQL extends SQL by adding constructs found in procedural languages, resulting in a structural language that is more powerful than SQL. The basic unit in PL/SQL is a block. All PL/SQL programs are made up of blocks, which can be nested within each other. Typically, each block performs a logical action in the program.
What are the types of debugging?
What is trigger and why it is used?
Triggers are used to maintain the referential integrity of data by changing the data in a systematic fashion. Each trigger is attached to a single, specified table in the database. Triggers can be viewed as similar to stored procedures in that both consist of procedural logic that is stored at the database level.
How do I run a PL SQL procedure in SQL Developer?
Assuming you already have a connection configured in SQL Developer:from the View menu, select DBMS Output.in the DBMS Output window, click the green plus icon, and select your connection.right-click the connection and choose SQL worksheet.paste your query into the worksheet.run the query.
How do I run a selected query in PL SQL?
PL/SQL SELECT INTO examplesFirst, declare a variable l_customer_name whose data type anchors to the name columns of the customers table. … Second, use the SELECT INTO statement to select value from the name column and assign it to the l_customer_name variable.Third, show the customer name using the dbms_output.