Describe the architecture of a relational database, including how the Essay

Describe the architecture of a relational database, including how the data is organized. justify a relational DBMS. What are some of the limitations of a relati - Essay ExampleEach column has a column name and contains values that are forswear by the same type and size. For example, a column in the table S_DEPT specifies the names of the departments in the organization.A Primary disclose is a column or a combination of columns that is used to uniquely identify each row in a table. For example, the column containing department numbers in the S_DEPT table is created as a primary key and therefore every department number is different. A primary key must contain a value. It cannot contain a NULL value.A Foreign key is a column or set of columns that refers to a primary key in the same table or another table. You use foreign keys to establish principle connections betwixt, or within, tables. A foreign key must either match a primary key or else be NULL. Rows are connected logically wh en required. The logical connections are based upon conditions that define a relationship amidst corresponding values, typically between a primary key and a matching foreign key. This relational method of linking provides great flexibility as it is independent of physical links between records.The entities and the relationships between them are represented as a collection of tables. The process of deciding what the best collection of tables is for a given application is known as data-base modelling. For the purpose of this document, let the definition of a good model be defined as one which enables a single change to the part of the real(a) world being modelled to be reflected by a single change to the model.As an illustration of the sort of problem that lends itself to solution using an RDBMS consider a bank that wishes to maintain details of its branches, staff, customers and their accounts, including details of cash investment and withdrawal.Relationships are reflected by one t able referencing another through the second tables primary key. The referencing table has a field (or fields) which correspond to the primary key field(s)