relational dbms การใช้
- As of 2009, most commercial relational DBMSes employ SQL as their query language.
- In 1974 the IBM San Jose Research center developed a relational DBMS, DSL / Alpha.
- Business System 12 was a short-lived industry-strength relational DBMS that followed the ISBL example.
- The initial usage of relational DBMs for commercial purposes lead to the term " shadow tables " becoming widespread.
- To a user, SAP IQ looks just like any relational DBMS with a SQL-based language layer accessible via ODBC / JDBC drivers.
- When you " buy database software ", you typically get the code and a license for a DBMS ( which nowadays most often is a Relational DBMS, or RDBMS ).
- A competing " next generation " known as NewSQL databases attempted new implementations that retained the relational / SQL model while aiming to match the high performance of NoSQL compared to commercially available relational DBMSs.
- In the process, Cullinet acquired some very questionable VAX companies, but one had an outstanding relational DBMS . By then it was too late the company's $ 50 million of cash had been spent.
- Whereas traditional RDBMS or SQL-DBMS products focused on the efficient management of data drawn from a limited set of data-types ( defined by the relevant language standards ), an object-relational DBMS allows software developers to integrate their own types and the methods that apply to them into the DBMS.