APhysical Data Modeldescribes a database-specific implementation of the data model. It offers database abstraction and helps generate the schema. This is because of the richness of meta-data offered by a Physical Data Model. The physical data model also helps in visualizing database structure by...
Many vendors begin to integrate XML into DBMS products. Characteristics of DBMS Here are the characteristics and properties of a Database Management System: Provides security and removes redundancy Self-describing nature of a database system Insulation between programs and data abstraction Support of ...
You use data abstraction when you specify the datatype of a variable. The datatype stipulates a set of values and a set of operations appropriate for those values. For instance, a variable of type POSITIVE can hold only positive integers, and can only be added, subtracted, multiplied, and ...
The model’s abstraction prevents business workers from freely analyzing. Traditional OLAP solutions have a high risk of failure. Integrate your data in minutes! Start for Free Now Conclusion Many Business Intelligence (BI) solutions use OLAP (Online Analytical Processing), a sophisticated technology...
Discuss two types of malware and clarify how they cause damage to systems. Support your discussion with real-life examples. Malware: Malware (a portmanteau of malicious software) is the typical word used to describe malicious programs. There are multiple ways in which these programs can...
Flexibility: Middleware can help improve the flexibility of software applications by providing a layer of abstraction between the application and the underlying infrastructure. This abstraction layer can make adding new features and capabilities to the software easier. Conclusion In the blog, we concluded...
Advantage of DBMS Controls redundancy It stores all the data in a single database file, so it can control data redundancy. Data sharing An authorized user can share the data among multiple users. Backup It providesBackup and recovery subsystem. This recovery system creates automatic data from sys...
What is Data? Definition, Types, Computer, Information with explanation of input device, output device, memory, CPU, motherboard, computer network, virus, software, hardware etc.
You usedata abstractionwhen you specify the datatype of a variable. The datatype represents a set of values and a set of operations appropriate for those values. For instance, a variable of typePOSITIVEcan hold only positive integers, and can only be added, subtracted, multiplied, and so on...
Overview of PL/SQL Object Types Before reading this chapter, you should be familiar with some backgroup topics: Object-oriented programming, including the idea of abstraction. The ideas of attributes and methods. In other languages, these are part of classes. In SQL and PL/SQL, they are part...