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database: each entity represents a database table, and the relationship lines represent the keys in one table that point to specific records in related tables. ERDs may also be more abstract, not necessarily capturing every table needed wit...
data transmission circuit. Receive requests from the network layer and uses the services of the physical layer .The purpose of the link layer is to make information flow, error-free, between two machines that are directly connected (connect...
as database that has a number of various tables of different items. There are a number of benefits of relational database that is directly associated with the success of any process. Normalization is another major process that is being used...
Advantages It means all of the information is together......
data? The security and privacy issues are inherent in the large databases as they are vulnerable to data theft attacks. The databases have proven to be very beneficial for managing, holding and saving the data of people in huge number but ...
data base, which is a repository for storing and analyzing numerical data. Typically, the main data repository is a numeric value that can be accumulated, or group, stored in structures that are different from conventional structures transa...
logical data model when the design of an information system is built on a database. Likewise, this is converted to a physical model when it is physically designed. The building blocks of an ERD are entities, relationships and attributes......