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Database Normalization: 1/2/3 Normal Forms

Lesson 03/20 • 4:43
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Thananjeyan G avatar
Thananjeyan G

Hi Povilas,

I have doubts on creating table schema. Fields are different based on Customer Income type

customer form inputs; name, age,email,mobile, income_type (salaried, self_employed, salaried_professional)

salaried: company_name, designation, salary, salary_credited_type, salary_credited_bank, payslip, form16, form16_yrs, company_location, present_work_exp, total_work_exp, official_email, office_landline, office_address, office_landmark

self_employed biz_name, biz_location, biz_constitution, about_biz, turn_over, itr_status, itr_filed_yrs, gst_no_status, gst_no, dor, gst_return_status, biz_type banks_self_employed (multiple) bank_name, ac_no, ac_type

salaried_professional net_cross_salary, pt_deduction, epf_deduction, form16, exp_yrs, salary_credit_type, income_proof, bank_statment_months, company_name, professional_degree, valid_membership, negative_profile

Thanks Thananjeyan

Povilas Korop avatar
Povilas Korop

I think you should structure that exactly as you've listed above, with such tables:

  • customer_types
  • customers (wth customer_type_id)
  • incomes_salaried (with incomes_salaried.customer_id) - just not sure of the best table name
  • incomes_employed (with incomes_salaried.customer_id) - just not sure of the best table name
  • incomes_salaried_professional (with incomes_salaried_professional.customer_id) - just not sure of the best table name

But then it depends on what data you would present and what DB queries you would run in the future.

Thananjeyan G avatar
Thananjeyan G

Okay Thank you.

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