1.4. RDBMS: TABLES AND DATABASES
Officially, an RDBMS is a software package designed to manage large amounts of data organized as collections of tables. Commercial RDBMS characteristics include
Being organized as collection(s) of tables
Using client-server architecture
Being ANSI SQL compliant, usually SQL-92 at the entry level
SQL Server specifies a single collection of related tables as a database, which contains the data tables, system tables and other objects, such as views, indexes, stored procedures and triggers used in operations on the data. Table 1-4 represents a collection of two tables: emps and depts.
COMPANY ORGANIZATION | ||||
---|---|---|---|---|
emps | ||||
ename | empid | deptno | telnum | sales_amt |
Mary Smith | 5555 | 100 | 5678 | |
Sammy Sosa | 2222 | 102 | 2345 ... |
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