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Db/database queries.txt

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+
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+CREATE TABLE public.user_info
+(
+    id integer NOT NULL DEFAULT nextval('user_info_id_seq'::regclass),
+    first_name character varying(20) COLLATE pg_catalog."default" NOT NULL,
+    middle_name character varying(20) COLLATE pg_catalog."default",
+    last_name character varying(20) COLLATE pg_catalog."default" NOT NULL,
+    email character varying(50) COLLATE pg_catalog."default" NOT NULL,
+    phone character varying(15) COLLATE pg_catalog."default" NOT NULL,
+    role integer NOT NULL,
+    address character varying(100) COLLATE pg_catalog."default",
+    CONSTRAINT user_info_pkey PRIMARY KEY (id)
+)
+WITH (
+    OIDS = FALSE
+)
+TABLESPACE pg_default;
+
+ALTER TABLE public.user_info
+    OWNER to postgres;
+
+-- Trigger: valid_trigger
+
+-- DROP TRIGGER valid_trigger ON public.user_info;
+
+CREATE TRIGGER valid_trigger
+    BEFORE INSERT OR UPDATE 
+    ON public.user_info
+    FOR EACH ROW
+    EXECUTE PROCEDURE public.validate();
+
+
+
+
+
+
+
+
+
+
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+
+
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+
+
+
+
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+CREATE FUNCTION public.validate()
+    RETURNS trigger
+    LANGUAGE 'plpgsql'
+    COST 100
+    VOLATILE NOT LEAKPROOF
+AS $BODY$BEGIN
+IF(NEW.first_name !~'^[A-z]{1,20}$')
+THEN RAISE EXCEPTION 'INVALID first name';
+END IF;
+IF(NEW.last_name !~ '^[A-z]{1,20}$')
+THEN RAISE EXCEPTION 'INVALID last name';
+END IF;
+IF(NEW.email !~'^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$')
+THEN RAISE EXCEPTION 'INVALID Email';
+END IF;
+IF(NEW.phone !~ '^[(]{0,1}[0-9]{3}[)]{0,1}[-\s\.]{0,1}[0-9]{3}[-\s\.]{0,1}[0-9]{4}$')
+THEN RAISE EXCEPTION 'INVALID Phone Number';
+END IF;
+RETURN NEW;
+END;$BODY$;
+
+ALTER FUNCTION public.validate()
+    OWNER TO postgres;

Db/db.json

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+[
+  {
+    "id": 0,
+    "firstName": "",
+    "middleName": "",
+    "lastName": "",
+    "email": "",
+    "phone": "",
+    "role": 0,
+    "address": ""
+  },
+  {
+    "id": 1,
+    "firstName": "",
+    "middleName": "",
+    "lastName": "",
+    "email": "",
+    "phone": "",
+    "role": 0,
+    "address": ""
+  }
+]

Db/interface.ts

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+export interface DataTypeOfUser{
+    id:number;
+    first_name : string;
+    middle_name:string;
+    last_name:string;
+    phone:string;
+    email:string;
+    address:string;
+    role:number;
+
+}