DATABASES AND SQL

Databases and SQL

Databases and SQL

What is a database?

Definition of the database is a structured collection of records or data that is stored in a computer system. To make the database truly functional, it must not only store large amounts of records, but easy access.

Is a database the same as a database management system (DBMS)? Why or why not?

In addition, new information and changes should also be fairly easy to enter. In order to be highly effective database system, you must include a program that manages the requests and the information stored in the system. This is commonly referred to as DBMS or database management systems. In addition to these features, all databases that are to be built with high data integrity and the ability to recover data if a hardware failure.

Identify at least three popular DBMS's in use today and note some of their common features.

1. Operational database

These databases store detailed data on the activities of the organization. They are usually organized by topics; the process is a relatively large amount of renovation with the help of surgery. Essentially all of the major organizations in the world uses such a database. Examples include customer databases that contact's record, credit, and demographic information about the client's business, personnel, databases containing information such as salary, benefits, skills, employee data, enterprise resource planning, which record information about the product components, parts inventory and financial databases, keep track of money, organization, accounting and financial operations.

2. Data warehouse

Data warehouse archive of contemporary data from operational databases, and often from external sources, such as marketing research firm. Often, operational data is converted on the way to the warehouse, receiving a brief, anonymous, reclassifications, etc. warehouse becomes the primary source of data for use by managers and other end users who may not have access to operational data. For example, sales data can be combined to weekly stock and converted from the internal product codes to use the UPC codes so that it can be compared with the ACNielsen data.Some essential and critical components of data warehousing include obtaining and analyzing data conversion, uploading and managing data from in order to make it available for future use. Operations in a data warehouse are usually associated with bulk data processing, and as such, it is uncommon and poorly targeted individual rows to update, insert and delete operations. Mass native handlers for data entry and bulk SQL ...