Hello after we sitting goes all label for all attributes let's now try to configure something else in the entity object. We can now go through all entity object and check if there is any date column or date attribute. We can set the date format if you want to set the date format. So here there is no date this is a type of column or or attribute it is big decimals string, okay. Here or string you this email. This email here as you can see sees a student diverse diversity is here a timestamp you can go to you all here and you can select a date format.

Here it coming like this. We can set it like DD Mmm, awesome. M M and boy okay. This is Our date format okay no other one here sure Colossus nothing and the teacher here data versus Well, we can sit date format symbol date and I will write DD mm yy. So, this is another thing we can do for all entity objects. After that we can see how we can make think about alternate key if there is anything we see if it should be not repeated.

So, here for example, teacher phone should not be repeated, it is not a primary key but in that case the same case I do want to enter two phone number four the same teacher so, You can mark this as auto the key you can go here for alternate key here and you can see will zap phone should be can see key okay and is a business rule in the entity validation you can create a unique key for the phone or turkey and you can display an error message this phone number is already exists okay. So any alternate key you have to go to this business rule and add a validation is entity level. Creating this alone will not make any effect unless you come here and create a new validator unique validator answer Left and right the error message as this is for the teacher we can see the teacher and the classroom anyway it is yeah as a parameter here so no need to add validation here.

If you want to add a validation for primary key you can do it like if you go to the business rule and add new validation you select the unique key as well you will find the years of primary key you can just write an error message this teacher is already in that class if you want to add this so case Student Okay we can add to him as auto Nikki as well. So you can go alternate key Select student name here with a business rule add validation, unique subject alternate student name failure, student name is already exist, okay. So this is you can, how you can define alternate key. I think now all all are okay. related to alternate key is the next step for this entity object we will set the default values so let's do it needs to be