ITSupportSolving any IT problems

 

An Overview of Databases

The records and entries stored in a computer are known as database. The best functional part of database that makes it valuable is not the number of important records saved only but also how easy and in how many variations it is possible to access the database. It should be easy to modify, update, delete and enter records in the database. Database Management System is usually deployed to manage the entry of data and queries efficiently. The other important features that a database must possess include data security and integrity and ability to retrieve data in case of accidental hardware crash.

Some of the benefits that you can reap out by maintaining efficient database are

1. To extract the data as per desired requirement out of all the entries in the database
2. Instead of modifying one entry at a time a multiple entries can be modified in single point of time
3. The database management system allows you to extract multiple values from different tables to fulfil single query
4. Even the user is able to calculate multiple values to get the required answer

 

There are many types of databases and some of the types are flat,network,hierarchical and relational databases. In flat model the data is arranged in two dimensions while in hierarchical model data the data is arranged in tree like format. When we talk about network database a single record can link to other records and the most important revolutionary database type till now is relational databases that stores the data in the format of tables that improves the function of accessing particular record effectively without rearranging the table. The standard query language commonly known as SQL is used to add,delete,modify and extract data.

To maintain the uniqueness of records the normalization technique is used that ensures that each entry is unique without duplications. You just need to enter the query that will pull out required data out of multiple tables that is the best feature of relational databases.

While databases contain highly important information tat does not need to be accessed by all, lots of precautionary measures are taken to protect the data in data bases. Databases can be in closed systems where there is restricted access or on network which can be accessed through Internet. Databases can be protected by passwords, locking users and providing access to applications and database administrators only.

Some of the most common errors that are potential threat to your database are overflow of buffer, denial of services and injected database worms.Standard Query Language is tampered and the data extracted is changed. Once accessed the unwanted user can play with database and corrupt it and that can raise questions about the integrity of the data. The most effective approach is to introduce security layers in between access to data and the user by installing fire walls, this would result in protection of valuable data of organization.

A little bit of monitoring and basic security measures keeps ones data safe. One needs to constantly monitor log files, audit the applications, keep data storage, provide security measures and increase the security layers.