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["Deleteing Multiple Columns"]
["Id Number","Name","Joining Month ","Station","Salary","Allowances"]
[44198,"James","January","Emergency",2000,250]
[44199,"Robert","February","In Ward",1500,200]
[44200,"John","March","Pharmacy",2500,300]
[44199,"Michael","April","Pharmacy",3000,300]
[44200,"William","April","Emergency",2000,250]
[44201,"David","June","Emergency",2000,250]
[44202,"Richard","July","Emergency",2000,250]
[44203,"Joseph","April","In Ward",1500,200]
[44204,"Thomas","September","In Ward",1500,200]

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["Basic Info & Salary data"]
["Id Number","Name","Joining Month "]
[44198,"James","January"]
[44199,"Robert","February"]
[44200,"John","March"]
[44199,"Michael","April"]
[44200,"William","April"]
[44201,"David","June"]
[44202,"Richard","July"]
[44203,"Joseph","April"]
[44204,"Thomas","September"]