If you want to start your career as an Oracle DBA then you have reached the right place. Here, we have given Oracle DBA tutorials for the beginners to help you in getting started with a career in the database world. The tutorial includes Oracle DBA basics that have been compiled after reading multiple books and reference links.
We made sure that you will learn basics step by step from scratch and this would be easy to decide for you either Oracle DBA profession is the right choice for your career or not. If you are interested in advance concepts too then you can opt for certification and training courses from JanBask Training that are 100 percent job-oriented and taught by experienced database programmers only.
A Database is the structured collection of organized information that can be accessed, modified, or analyzed efficiently. If we talk about the simple software applications like Word, Excel or Spreadsheets then they could not handle voluminous data efficiently. Here, we need a secure storage system where data can be stored or retrieved quickly whenever required.
To make this approach feasible, Oracle discovered Relational Database Management system (RDBMS) to store, retrieve or modify information more efficiently and securely. The RDBMS system delivers high performance and maximized data concurrency that boosts up the overall productivity of the multi-users database environment. It can be termed as RDMS or simple Oracle Databases. Oracle DBAs (Database Administrators) use specialized software programs to store or organize information in a mashed-up way.
The key responsibilities of an Oracle DBA include:
He should have good communication skills and he should know how to work on networks and storage technologies. Skills Required for an Oracle DBA include:
Oracle database administration is not managed by a single person but Company generally hires a group of specialists to complete the administration work. Oracle database architecture works on grid-based computing that is highly suitable for enterprises and large-sized organizations. Let us have a quick look at the physical files that are used by Oracle Database to store voluminous data.
In this section, we will discuss all important terms that are necessary to understand before you start working on the Oracle database. This section covers almost all terms and parameters that are used frequently in Oracle Databases.
Objects in Oracle database are used to perform a variety of functions. Here, we will discuss the common objects that can be used in our day to day environment while working with Oracle databases.
Tables are the common objects that are used as an integral part of the database. Once a table is created, data should be stored by following the basic rules like data types, values etc. A table compliance of all important rules is always easy to access and modify with simple SQL commands.
If database administrator wants to limit the access of data then views concept comes into the picture. Here, different views of data can be defined based on users and Company requirements.
Take an example, where you want to share only a limited amount of information with other organization then you need to mask the rest of the information with proper SQL commands.
You are free to list the important modules only that you want to make visible in front of others. The modules that are not listed will not display and it will be hidden from the users. Views were introduced to enforce a flavor of security and it is frequently used worldwide.
It allows users referring to objects that are stored somewhere else in same or other databases. These objects are handy objects that can be used with alternative names in the table and you just need to set a pointer to the real table.
This is a memory management technique where same objects can be reused and it optimizes the overall storage space for database objects. The concept has been used by the database programmers since decades to increase the throughput of the application code.
These objects promote the encapsulation of code that could run either implicitly or explicitly to perform some pre-determined task. The best part is that stored objects can be reused again and again whenever some action is required. It ensures consistent performance and secure processing together. They can be further divided into procedures, functions and the packages to declare constants, variables and the cursors for exceptional handling.
Hope you enjoyed reading the blog “Oracle DBA tutorial online for beginners”. In this blog, we discussed all important aspects and the parameters that are necessary to understand before you start working as an Oracle Database administrator. Once you will go through this blog carefully, this would be easy to decide for you either Oracle DBA profession is the right choice for your career or not.
If you are interested in advance concepts too then you should opt for certification and training courses from JanBask Training that are 100 percent job-oriented and taught by experienced database programmers only. This blog would help you in taking the first step into the lands of database professionals and database administrators.
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