Key Points of Fourth Generation Languages
User-Friendly and Non-Technical:
o4GLs are designed for people to use without needing deep programming knowledge.
They are often "non-procedural," which means you don't need to write out detailed
steps for the computer to follow; instead, you focus on!what!you want done,
not!how!to do it.
Categories of 4GLs:
Database Management Languages: These are used to work with databases, making it
easier to manage large sets of data.
Example of Query Language (SQL): Imagine you have a big list of students in a school
database, and you want to see only those who are 18 or older. With a query language
like!SQL, you can type something like:
“SELECT names FROM students WHERE age > 18” to pull data out of a database.
Common examples include SQL (Structured Query Language).
Report Writers: These help create easy-to-read reports by organizing data in a specific
format. Instead of manually creating complex reports, report writers handle the layout and
formatting. A!report writer!is a tool that takes a lot of information, organizes it, and shows
it to you in a neat, easy-to-read way. Think of it like a summary generator.
Example of Report Writer: Let’s say your school needs a report showing the average
grade of every class. Instead of going through each student’s grade, adding them up, and
then calculating an average, a!report writer tool can automatically format and calculate the
data in a clean, readable report. This is like using an advanced version of Microsoft Excel,
where the report is created automatically based on the data you have.
Application Generators: These tools help create software based on specific requirements.
You describe what you want, and the tool generates the code or software to meet those
needs. It can simplify the process of creating programs without requiring you to write every
line of code.
Example of Application Generator (Microsoft Access or Zoho Creator): Imagine your
gym wants an app to track members’ personal bests for exercises like squats, deadlifts, and
