Easytrieve is a programming conversation that helps you retrieve information from databases that you exertion with. It is an easier vocabulary to memorize than COBOL or FORTRAN. But, when you are working with databases that are usual they are normally bit touchy so you devoir to receive in and absent as quickly as practicable. The closest Testament come across you the basics of draw up a intelligible Easytrieve programme.
Instructions
Add any variables that do not exist. For example you may be asked for age and your variables only have date of birth. Therefore you would need to create two variables; one for the current date and one subtracting the date of birth from the current date variable to get the age of the person. Eye tips to treasure trove elsewhere why. Working with an away case is yet easier and not era touchy.
2. Build certain you designate the database that you want to capture the data from. Easytrieve needs to know where you need to go in order to receive there. When you program you are creating a map and you can't leave out any steps or you certainly won't end up where you want to be.
3. Retrieve a copy of the layout of the database you are using. You need to know where each of the variables resides in order to know where they are when you are working with the database or outfile that you created.
4. Create an outfile in your program. This will be the place where you send your results. Usually this file will be saved to your own pc and therefore you will have unlimited access to it and not have to worry about any time sensitivity the database has.
5. Run the program. If there are any mistakes you will need to fix them. These could range from not indicating the database you are seeking correctly to simply wording a step incorrectly. You need to correct your mistakes and run the Easytrieve program again until you get the results you are seeking.
6. Select the variables you need using your outfield. If your instructions only ask for data for June 2005 you need to denote it in your program. You may also need to only capture males or females of a certain age. Whatever the limitations are you want to add them in your program before you go any farther.
7.1. Explain what you must. Beget decided you conceive the scope of the employment. The simplest bag to extract facts is not to string what you attract, on the contrary divide it down next. Easytrieve lets you create new variables by using working storage variables in your program.
8. Produce the final results and check it to make sure you have met all the requirements of the job. Give them to the appropriate person. This could be your customer or your supervisor.
