Overview Oracle SQL Training

Database administrators, data analysts, and application developers are the most common users of Oracle SQL in organisations.

These individuals manage the database, analyse data, and create applications that interact with it.

Oracle SQL is frequently paired with other tools and technologies, including Oracle Database, Oracle APEX, and Oracle BI.

These tools enhance data management and analysis capabilities and application development.

Oracle SQL Tutorial in Hyderabad

What is Oracle SQL?

A database is software that stores information, such as first names, last names, or images, in a table format. It is similar to a notebook, where one can create one table and store information in a specific format.

Oracle SQL plays a crucial role in managing extensive, heavy records for applications we use every day, such as Facebook. This robust database software allows easier access to data from files and Excel.

The front-end language interacts with the back-end language, C++ or Java. The database then processes the request from the front-end to the backend language, ensuring that the same information is passed to the backend language and vice versa.

There are two types of databases: relational and No SQL databases. Relational databases store information in tables, while no SQL databases store information in columns and rows. Different databases, such as PostgreSQL, Oracle SQL, and MySQL, are available in the market.

Data Types in Oracle SQL Database

Oracle categorises data types into five major groups.

• character datatypes. CHAR. NCHAR. VARCHAR2 and VARCHAR. NVARCHAR2. CLOB. NCLOB. LONG.
• NUMBER datatype.
• DATE datatype.
• binary datatypes. BLOB. BFILE. RAW. LONG RAW.

These categories help categorise and organise data in the Oracle database.

Types of classification of SQL statement in Oracle database

Data definition language includes statements like create, ultra, rename, drop, and truncate. Data manipulation language involves manipulating data within a table, such as insert, update, and delete operations.

Data control language includes grant and revoke operations. Transaction control language deals with transactions, such as insert, delete, and update operations. The first operation is to commit, roll back, and save points.

Data query or retrieval language refers to retrying operations like SQL statements. The select statement falls under this category.

The consolidated classification of Oracle operations is divided into five categories: DDL, DML, DCL, TCL, and DQR. Each category has its own set of operations, ensuring a comprehensive understanding of the database’s operations.

Create a table in the Oracle database

The syntax of the create statement is explained, including the use of variables and data types.

An example of creating an employee table is given, where the table name is made, and columns are specified. The data type is defined in the table name, salary, date of birth, and other relevant fields.

Rename Table in Oracle SQL database

The Alter statement is a powerful tool used by SQL developers to modify the definition of an existing table.

It allows for four operations: adding a new column, renaming a column, removing a column from the existing table, and modifying the data type of a column.

To add a new column, use the keyword “alter table” and specify the table name, operation name, column name, data type, and size. The SQL statement will be executed to add the new column.

To delete a column, use the SQL statement “delete” and specify the column and column names you want to delete. The operation will be successful, and the column will no longer be present in the table.

Drop Table in Oracle SQL database

The drop SQL statement is used to remove tables, views, synonyms, and sequences from the database.

It is important to note that removing a table from the database will remove all data and invalidate any views, synonyms, or sequences applied to it.

The statement uses the keywords “drop table” and the table name. The student table is then deleted or removed from the database.

Insert data into a table

The insert statement is used to insert data into a database table. The index should declare column names and values in the same order.

Delete a row in the Oracle database

The delete operation is a crucial tool for managing data in a database. It involves using the syntax “delete from table name” and “condition” to delete rows from a table.

It is important to note that the table must be in your schema and that the user account has the necessary privileges to delete records.

Update rows in the Oracle SQL database

The S Q L update statement is essential to update a table in an Oracle database.

It requires understanding the syntax, permissions, and wear conditions to update specific columns or rows.

The syntax of the update statement is simple: the update is a keyword, the table name is the table to update, the set is a keyword, the column and column value is the desired value and where the condition is the rows to update.

Retrieve data from the table

The select statement is used to retry data from any table, such as an employee table. For example, to retrieve records from the department table where the department is equal to 19, the select statement would be:

SELECT department ID AS department ID;

Types of Logical Operators

The Oracle database offers three types of logical operators: OR (Disjunction), not (Negation), and (Conjunction). These basic operators can be used in select SQL statements. The not operator is used for negation.

The and-operator can be used to write the query, while the and-or operator can be used to write the query.

The non-logical operator is used for negation. These operators are essential for efficient data management in Oracle databases.

Oracle SQL Certification in Hyderabad

Oracle has several SQL and database management certifications in Hyderabad that reflect varying levels of expertise and specialisation.

Below are some of the most popular Oracle SQL certifications in Hyderabad:

Oracle Certified Associates: This entry-level certification in Hyderabad covers fundamental Oracle Database concepts such as SQL, PL/SQL, and database administration. It is an excellent place to start for those new to Oracle SQL.

Oracle Certified Professionals: These certifications are a step above the OCA and require a more in-depth understanding of Oracle SQL and database administration.

Oracle Certified Masters: The OCM certification is the most advanced level of Oracle SQL certification. It necessitates extensive Oracle SQL and database administration knowledge and experience installing, managing, and troubleshooting Oracle databases.

These Oracle certifications in Hyderabad allow you to demonstrate your Oracle SQL and database management knowledge while advancing your career and earning potential.

Oracle training in Hyderabad    

Oracle training in Hyderabad is the instruction and education provided to people who want to learn and specialize in Oracle technologies, software, and databases.

Oracle courses in Hyderabad can be delivered in a variety of formats, including classroom, online, and self-paced learning.

Oracle online courses in Hyderabad have become increasingly popular over the years.

Oracle, a leading global provider of enterprise cloud computing solutions, provides a variety of training programs in Hyderabad to help professionals keep up with the latest technologies and advance their careers.

Oracle training classes in Hyderabad cover a variety of topics, such as Oracle database administration, Oracle application development, Oracle middleware, and Oracle enterprise management.

These Oracle training programs in Hyderabad are tailored to the needs of professionals, from beginners to seasoned professionals, and are delivered by certified and experienced trainers.

Oracle online training classes in Hyderabad are highly interactive, with both theoretical and practical sessions. The training programs are also designed to prepare professionals for Oracle certification exams, allowing them to earn certifications and boost their industry credibility.

Oracle training in Hyderabad is provided by a variety of training institutes and centres, including Oracle University, Oracle’s official training provider.

These training institutes provide flexible training schedules, including weekday, weekend, and online training programs, to accommodate the hectic schedules of working professionals.

In addition to training programs, Oracle training in Hyderabad offers opportunities for networking and career advancement. Participants can network with other IT professionals, share knowledge and experiences, and look into career opportunities in the industry.