WHAT IS DATABASE?
In the 1960s, Database ran in massive, water-cooled mainframes that cost millions of dollars apiece. From 2010, the cost of hardware had dropped so much that 70% of the average. IT budget went to database concerned areas. These days, technology impacts on Database Management and database technologies have a major impact on the expanding use of computers. It can be fairly told that database plays a critical role in virtually all areas where computers have been used, including technology, medicine, business, education, research, commercial organization, library science, etc.. On the following 50 years, computer professionals working on database field may need to adapt to equally striking changes. The goals of database technologies would be to keep the information readily available, change and upgrade consistently; and fulfill the information requests of users. Now the database is so common word that we should understand the significance of the database.
Definition of database and DBMS:
The expression Database consists of two words, viz. Info and foundation. It may be stated that database is a base for information, i.e., an organized collection of information, A database allows easy and efficient storage, retrieval and modification of information, regardless of the amount of information being manipulated. By data, we imply known facts which may be recorded and that have implicit meaning. By way of instance, a pupil database contains a name, address, section, student_id, etc. of the student. We might have listed it onto a hard disk using software like Access or Excel. This group of associated data has implicit meaning and therefore is a database.
So, a Document is a coherent set of data with some inherent meaning. The data are usually organized to model relevant elements of reality in a manner that supports procedures requiring this information. By way of instance, mimicking the availability of seats in the railroad reservation system in a manner that supports locating a train with accessible seats for going from a source channel to a destination station.
A database Has some origin from which information is derived or recovered. A database can be of any dimension and of varying complexity. It might be created and stored manually or it may be computerized by a set of software programs or by a database management system. In this chapter, we’re just interested in computerized databases.
A database The group of data is usually known as the database and it contains information relevant to an enterprise. The primary objective of a DBMS is to offer an environment to store and retrieve database data that is both efficient and convenient to use. Thus, the DBMS is a general-purpose software system that is created for specifying creating, querying, upgrading and management of databases.
Programs of the database:
It is Previously found a database is a collection of data in a way that the data becomes easy to access and handle. The information is organized in the form of tables and tables saved data in the form of columns and row. The information from these tables can then be retrieved or displayed in various ways using questions and views. The main use of a database is to store and organize data for efficient and easy manipulation of data. Using a database is as follows:
- Creating various database entities.
- Manipulating data.
- Generating reports.
- Providing data integrity.
Creating various database things:
Table shop Data in the shape of columns and rows where data in each row represents the record. The database also offers the facility to retrieve and view data which is known as database entities. In a relational database, each record in a table has similar features where values of the characteristics can vary.
The data is stored in tables and users moved to interact directly with the database applications using query language for manipulating data in the Database. By data manipulation we mean:
- Retrieving of data stored in the database
- Inserting new info into the database
- Modifying existing data
By using Computer language users can manipulate data according to their requirements. Utilizing query language along with a keyboard, they enter commands that teach the DBMS to recover data from a database or update data.
By producing Report user may represent data depending on their requirements. By way of instance, the principle of a college might require a report displaying the details of the result of students. You should design the report so that it can provide the required information inline with the need. It can likewise be said that the document may also group the data. A report does not store information but it only shows the data type one or more tables. Using the report, the data will be displayed in a format that fulfills the requirement of the user report.
Providing Data Integrity:
Data Ethics is an important concept that the DBMS provides. Integrity means ensuring accurate data in the database. Since all data is stored only in one area, it’s simpler to apply ethics controls and it can be compromised in many ways.