service/src/main/resources/db/migrations/postgresql/V1__initial_setup.sql

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--   http://www.apache.org/licenses/LICENSE-2.0
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CREATE TABLE meketre_payroll_configurations (
  id                  BIGSERIAL    NOT NULL,
  customer_identifier VARCHAR(32)  NOT NULL,
  main_account_number VARCHAR(34)  NOT NULL,
  created_by          VARCHAR(32)  NOT NULL,
  created_on          TIMESTAMP(3) NOT NULL,
  last_modified_by    VARCHAR(32)  NULL,
  last_modified_on    TIMESTAMP(3) NULL,
  CONSTRAINT meketre_payroll_config_pk PRIMARY KEY (id),
  CONSTRAINT meketre_payroll_config_acct_uq UNIQUE (customer_identifier, main_account_number)
);

CREATE TABLE meketre_payroll_allocations (
  id                       BIGSERIAL     NOT NULL,
  payroll_configuration_id BIGINT        NOT NULL,
  account_number           VARCHAR(34)   NOT NULL,
  amount                   NUMERIC(15,5) NOT NULL,
  proportional             BOOLEAN       NOT NULL,
  CONSTRAINT meketre_payroll_allocations_pk PRIMARY KEY (id),
  CONSTRAINT meketre_payroll_alloc_acct_uq UNIQUE (payroll_configuration_id, account_number),
  CONSTRAINT meketre_payroll_alloc_config_fk FOREIGN KEY (payroll_configuration_id) REFERENCES meketre_payroll_configurations (id)
);

CREATE TABLE meketre_payroll_collections (
  id                    BIGSERIAL    NOT NULL,
  identifier            VARCHAR(32)  NOT NULL,
  source_account_number VARCHAR(34)  NOT NULL,
  created_by            VARCHAR(32)  NOT NULL,
  created_on            TIMESTAMP(3) NOT NULL,
  CONSTRAINT meketre_payroll_collections_pk PRIMARY KEY (id),
  CONSTRAINT meketre_pay_col_identifier_uq UNIQUE (identifier)
);

CREATE TABLE meketre_payroll_payments (
  id                    BIGSERIAL     NOT NULL,
  payroll_collection_id BIGINT        NOT NULL,
  customer_identifier   VARCHAR(32)   NOT NULL,
  employer              VARCHAR(256)  NOT NULL,
  salary                NUMERIC(15,5) NOT NULL,
  CONSTRAINT meketre_payroll_payments_pk PRIMARY KEY (id),
  CONSTRAINT meketre_payroll_pay_coll_fk FOREIGN KEY (payroll_collection_id) REFERENCES meketre_payroll_collections (id)
);