ORACLE DATABASE-REDO lOG FILES
The contents are of my own testing and deployments. Not guaranteed that these might work in your environment. Please test before usage. REDO LOG FIL…
DELETE Statement in ORACLE DB— Step by Step Internal Flow with classroom example.
Imagine your Oracle database like a school, and you’re Teacher decides to remove a student (row) from the classroom(table). Let’s see how the journey works step by step: 1)Classroom = Oracle Table 2)Students = Rows (Records) 3)Class Teacher = Oracle Server Process 4)Attendance Register = Data Dictionary User fires DELETE statement: DELETE FROM students WHERE grade = 'D'; Internal Processing Steps: Client Process Sends DELETE Statement to Server Process The teacher receives a request to remove a student from the classroom. Syntax Check (Parsing) The teacher checks if the request is grammatically correct — proper command, keywords, and a semicolon. Semantic Check Teacher verifies if the classroom exists and whether the condition (like grade = 'D') makes sense. Object Resolution Teacher confirms that the ‘students’ classroom (table) exists in the school records (data dictionary). Optimization Decides the fastest way to find those students — by roll number, grade, or al...
