You will now use plain SQL to load data into your newly created entities. Copy the following code in the SQL console you left open from the database explorer:
INSERT INTO "DB_1"."PO.HEADER" VALUES('1000','USD',1704.22,1297.88,'A');
INSERT INTO "DB_1"."PO.HEADER" VALUES('1001','USD',184.39,1862.61,'A');
INSERT INTO "DB_1"."PO.HEADER" VALUES('1002','USD',1588.3,147.53,'R');
INSERT INTO "DB_1"."PO.HEADER" VALUES('1003','USD',178.14,485.68,'I');
INSERT INTO "DB_1"."PO.HEADER" VALUES('1004','USD',869.59,652.36,'I');
INSERT INTO "DB_1"."PO.HEADER" VALUES('1005','USD',1671.67,624.85,'A');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1000','1','PC_1001','USD',1657.7,193.38,2,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1001','1','HR_1232','USD',240.96,1964.76,5,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1002','1','IT_8456','USD',1678.83,1156.55,1,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1003','1','BO_5423','USD',136.45,212.50,1,'KG');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1004','1','PI_3721','USD',1108.46,1283.65,3,'KG');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1005','1','CC_3526','USD',581.84,1678.54,4,'LB');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1000','2','PROD1','USD',1241.95,1679.88,1,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1001','2','PROD1','USD',1490.50,460.70,5,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1002','2','PROD1','USD',318.25,7.15,4,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1003','2','PROD1','USD',311.75,152.29,1,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1004','2','PROD1','USD',664.58,864.91,5,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1005','2','PROD1','USD',1174.65,216.97,1,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1000','3','PRID2','USD',1839.9,1425.12,4,'M');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1001','3','PRID3','USD',1344.18,1838.52,3,'M');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1002','3','PRID4','USD',1109.49,950.91,1,'EA');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1003','3','PRID5','USD',570.36,1804.31,1,'LB');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1004','3','PRID6','USD',38.5,1874.59,2,'KG');
INSERT INTO "DB_1"."PO.ITEM" VALUES('1005','3','PRID7','USD',1145.66,126.50,2,'G');
Click on the Run button: