The company offers freight transportation, transportation management, brokerage and warehousing. All three industrial parks also have large concentrations of warehousing and regional trucking facilities. This includes manufacturing, warehousing, utilities, and transportation. Additional services may include cleaning services for houses, offices or warehousing facilities. Other major industries by employment are energy, warehousing and distribution, and retail. It consists of order processing, warehousing, and transportation. Forklifts have become an indispensable piece of equipment in manufacturing and warehousing. Data virtualization may also be considered as an alternative to ETL and data warehousing. There also has been significant growth in the health care, transportation and warehousing industries. Laredo's economy revolves around commercial and industrial warehousing, import, and export. ELT based data warehousing gets rid of a separate ETL tool for data transformation. Miami is also an industrial center, especially for stone quarrying and warehousing. The latter describes the requirements of storage (including warehousing) and usage of hazardous materials. Culture and entertainment employed 7,711 and that Distribution, warehousing and wholesale employed 5,909. Record linkage plays a key role in data warehousing and business intelligence.