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RDBMS Articles
Page 8 of 8
Future of RDBMS
While Big Data and NoSQL databases have become popular choices for modern data solutions, the crucial features of RDBMS ensure it remains relevant and widely used. RDBMS is designed to handle structured data with ACID compliance, making it indispensable for applications requiring data integrity and consistency. Why RDBMS Still Matters The RDBMS market continues to grow with approximately 9% annual growth, as reported by Gartner. Although a massive volume of the world's data has been produced in recent years, most business-critical data remains structured − financial records, customer information, inventory, and transactions − all of which are best ...
Read MoreDifference between an SAP ERP system and DBMS
A DBMS (Database Management System) and an SAP ERP (Enterprise Resource Planning) system serve different purposes. A DBMS manages data storage and retrieval, while an ERP is a complete business application suite that uses a DBMS as one of its components. What is DBMS? A DBMS is a tool or interface used to create, manage, and query databases. Examples include SQL Server, MySQL, Oracle, and PostgreSQL. A DBMS handles data storage, retrieval, indexing, security, and backup. It is mainly designed for and used by technical people like database administrators and developers. What is ERP? ERP (Enterprise ...
Read MoreOffset-Fetch in MS SQL Server
Offset-Fetch is feature in MS SQL Server. It helps to retrieve subset of rows from result set. It consists of two components: OFFSET and FETCH. The OFFSET clause specifies the number of rows to skip from the beginning of the result set. FETCH clause determines the number of rows to retrieve. Syntax SELECT column1, column2, ... FROM table ORDER BY column OFFSET {integer_value} {ROWS | ROWS ONLY} FETCH {FIRST | NEXT} {integer_value} {ROWS | ROWS ONLY} ONLY; Explanation of Syntax SELECT column1, column2, ...: Specifies the columns to be selected from the table. FROM table Specifies the table from ...
Read MoreOLAP Guidelines (Codd_s Rule)
OLAP (Online Analytical Processing) is data processing technique. It is used to query and analyze data. It analyze data in real time from multiple sources. In 1993, EF Codd introduced 12 rules for the relational database model for OLAP systems. These rules are known as "Codd’s rules". These rules serve as a guideline for the design and development of OLAP systems. In this article, we will explore these 12 rules developed by Codd. Codd’s rules These are 12 rules for OLAP systems, as proposed by E.F. Codd − Multidimensional Conceptual View OLAP system should provide multidimensional conceptual view of ...
Read MoreSecondary Key in RDBMS
What is a Secondary KeySecondary Key is the key that has not been selected to be the primary key. However, it is considered a candidate key for the primary key.Therefore, a candidate key not selected as a primary key is called secondary key. Candidate key is an attribute or set of attributes that you can consider as a Primary key.Note: Secondary Key is not a Foreign Key.ExampleLet us see an example −Student_IDStudent_EnrollStudent_NameStudent_AgeStudent_Email0969122717Manish25aaa@gmail.com0559122655Manan23abc@gmail.com0679122699Shreyas28pqr@gmail.comAbove, Student_ID, Student_Enroll and Student_Email are the candidate keys. They are considered candidate keys since they can uniquely identify the student record. Select any one of the candidate key as ...
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