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PostgreSQL - basic course

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      PostgreSQL - basic course

      Remote and stationary training options

      About training

      After completing the training, the participant will acquire knowledge about the principles of functioning of a relational database, its components and the correlations between them. They will understand the role of the SQL language in users' interaction with the database, especially in extracting the desired information from the repository. 

      View the training programme

      What will you gain from the training?

      Training objectives 

      After completing the training, the participant will acquire knowledge about the principles of functioning of a relational database, its components and the correlations between them. They will understand the role of the SQL language in users' interaction with the database, especially in extracting the desired information from the repository. Furthermore, through practical exercises, the user will gain the ability to formulate various types of queries of varying complexity and apply them appropriately to a specific situation. They will be able to edit data in the database and use transactions to process the data safely and consolidate the results.

      Skills

      • After the course, the participant will be able to:
      • Connect to a database using a client application,
      • Perform simple queries to display data from single tables,
      • Use single line functions to transform and convert data and group functions to aggregate entire sets as well as groups of records,
      • Formulate complex queries involving joins of multiple tables and simple and correlated,
      • Use aliases for columns and tables,
      • Use subqueries for processing complex queries
      • Manipulate data in tables: enter, modify and delete data,
      • Use subqueries in manipulating data,
      • Use transactions to approve or reject the effects of editing data.
      Is this training for you?

      Audience profile

      The training is designed for people who use databases as a source of information when constructing a variety of reports, analyzing data and developing applications.

      Requirements 

      The participants of the training are required to have basic knowledge of MS Windows environment.

      Duration

      Duration:

      • 2 days, 16 hours
      Detailed training program

      Detailed training program

      Presentation of the objectives and scope of the training

      Licensing principles - open source

      Features distinguishing PostgreSQL from other database servers

      PgAdmin application

      Basics of the relational model of data organization

      Concept of a database server

      Server objects:

      • Bases
      • Tablespaces
      • Schemas
      • Roles

      SQL language - selecting the data

      Overlay software for performing queries

      Creating simple queries

      • Keywords
      • Command syntax
      • Using aliases for columns and tables

      Sorting data

      Using functions in queries

      Single line functions

      Group functions

      Filtering on aggregation results

      Selecting data from multiple tables

      • Ways of joining tables
      • Types of joins

      Equi-join

      Non-equi-join

      Outer-join:

      • left-joined,
      • right-handed,
      • both sides

      Self-join

      Collective exercises

      Bulk operations on query results

      • Sum
      • Intersection
      • Difference
      • Subqueries
      • The role of subqueries
      • Query decomposition
      • Location of subqueries

      Simple subqueries

      Multiple times nested subqueries

      Correlated subqueries

      Data Manipulation Language (DML)

      • Insert
      • Update
      • Delete

      DML operations based on query results

      Transactions

      • The idea of transactivity of operations
      • Commit
      • Rollback
      • Savepoint

      Repetition of material on key operations in SQL

      Additional questions from participants

      Training summary

      Test

      Survey

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      Development path

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