**4.2 Data description and their uses**

The co-authors concentrated in reviewing articles and research materials that contained information and data on the first and second types and were published by well-recognized international sources. The lessons learned within the reviewed articles are of great significance in the formulation the guidelines being experienced before [12, 36]. In this context, the information and data that were reviewed are characterized with attributes that are useful to formulate and establish architectural and building engineering guidelines. In addition, these constitute the initiatives for strategies for healthier and safer buildings of varying types. Therefore, such type of information and data and the subsequent guidelines formulated are expected to provide suitable and adequate solutions to the following: rethinking building designs and modifications to existing building before being reoccupied during and after COVID-19; new building, urban, and interior project designs; specification; updating Building Rules and Regulations; improving the conditions of the contracts; building maintenance works; and updating criteria for sustainable, green, wellness, environmental, and energy development in view of the pandemic.
