A logical database can stretch over multiple physical hard disks and information files. The data storage unit is still a single database for information retrieval purposes.

Businesses are strongly advised to re-evaluate their approach to access control Dubai: Today’s employees are increasingly distributed and mobile, requiring many businesses to take a new look at ...

Data modeling advantage: The vendor offers a robust modeling tool that delivers visualizations of physical, conceptual and logical data structures. The platform can generate SQL scripts, thus ...

Reasons not to merge physical systems (video surveillance, door-access controls, fire alarms, HVAC and lighting controls and so on) onto an IP-based computer network shared by business: 1. Video ...

Logical implies a higher view than the physical. Users relate to data logically by data element name; however, the actual fields of data are physically located in sectors on a disk.

One of the first drivers for physical and logical access control convergence was the migration over the past 10 years from 125 kHz RFID proximity ... flexible and extensible data structure. ...

Under usual circumstances, the one-to-many or many-to-many relationship, alone, drives the pattern used within the database model. Certainly, the logical database model should represent the proper ...

This, or these, attribute(s) are the candidate key(s) for the structure. The candidate key is also known as the primary key, or if a structure has multiple candidate keys, then one of them is ...