Oracle DBA Course

This Oracle Database 12c: Introduction to SQL training helps you write subqueries, combine multiple queries into a single query using SET operators and report aggregated data using group functions. Learn this and more through hands-on exercises..

An Oracle database is a collection of data treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving the problems of information management. In general, a server reliably manages a large amount of data in a multiuser environment so that many users can concurrently access the same data. All this is accomplished while delivering high performance. A database server also prevents unauthorized access and provides efficient solutions for failure recovery.

Oracle Database is the first database designed for enterprise grid computing, the most flexible and cost effective way to manage information and applications. Enterprise grid computing creates large pools of industry-standard, modular storage and servers. With this architecture, each new system can be rapidly provisioned from the pool of components. There is no need for peak workloads, because capacity can be easily added or reallocated from the resource pools as needed.

Course Content

• Introduction to database management systems and databases
• Relational Database Model and Installing Oracle database software (11g R2 and 12c R1)
• Oracle Database Architecture, Database storage, Oracle Networking
• Used Managed (Manual) Backup and Recovery
• RMAN Backup and Recovery
• Oracle database upgrades
• Oracle 12c database creation (non-CDB) and new features
• Oracle Data Movement Utilities
• Oracle Database Performance Tuning
• Oracle 12c ASM (Automatic Storage Management)
• Oracle Database High Availability (RAC, DataGaurd)

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What is a database?

– Database offer a single point of mechanism for storing and retrieving information with the help of tables.
– Table is made up of columns and rows where each column stores specific attribute and each row displays a value for the corresponding attribute.
– It is a structure that stores information about the attributes of the entities and relationships among them.
– It also stores data types for attributes and indexes.
– Well known DBMS include Oracle, ibm db2, Microsoft sql server, Microsoft access, mysql and sqlLite

What are the different types of storage systems available and which one is used by Oracle?

Two types of storage systems are available
– Relational Database Management System (RDBMS) and Hierarchical Storage Management System (HSM)

– Most databases use RDBMS model, Oracle also uses RDBMS model.
– Hierarchical Storage Management System (HSM)
– Information Management System (IMS) from IBM.
– Integrated Database Management System (IDMS) from CA.

Explain some examples of join methods.

Join methods are of mainly 3 types.

Merge Join –
– Sorting both the tables using join key and then merge the rows which are sorted.

Nested loop join –
– It gets a result set after applying filter conditions based on the outer table.
– Then it joins the inner table with the respective result set.

Hash join –
– It uses hash algorithm first on smaller table and then on the other table to produce joined columns. After that matching rows are returned.

Difference between Logical and Physical data model.

– Logical data model represents database in terms of logical objects, such as entities and relationships.

– Physical data model represents database in terms of physical objects, such as tables and constraints.

What is normalization? What are the different forms of normalization?

Normalization is a process of organizing the fields and tables of a relational database to minimize redundancy and dependency.
– It saves storage space and ensures consistency of our data.

There are six different normal forms

First Normal Form – If all underlying domains contain atomic values only.

Second Normal Form – If it is in first normal form and every non key attribute is fully functionally dependent on primary key.

Third Normal Form – If it is in 2nd normal form and every non key attribute is non transitively dependent on the primary key.

Boyce Codd Normal Form – A relation R is in BCNF if and only every determinant is a candidate key.

Fourth Normal Form

Fifth Normal Form

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Oracle Development

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Duration: 45 Days

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Video: Yes

Oracle DBA Certified Professional