Course : SQL databases and language for non-IT people
Practical course - 3d
- 21h00 - Ref. SIF
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 | Understand the principles of the relational model and the mechanisms of an SQL-compatible database |
| Create queries to extract data based on various criteria |
| Perform joins to retrieve information from multiple tables |
| Use functions and perform data aggregation calculations |
| Combine the results of multiple queries using set operators |
Practical details
Hands-on work
Alternating presentations of example queries, demonstrations and hands-on exercises.
Teaching methods
Many sequential exercises for extracting data from an example database. Education common to all relational databases (Oracle, SQL Server, DB2, PostGreSQL, MySQL, Access, SQL Lite, etc.)
Course schedule
1 Introduction to databases
- What are a database and a database server?
- Reading a relational model.
- Creating a table. Notions of columns and types
- Primary key and uniqueness.
- Notion of referential integrity.
- Tool for querying a database.
Exercise
Investigating the database by searching for tables, columns, and keys.
2 Extracting data from a table
- What is an extraction query?
- List the values to be returned.
- The WHERE clause for filtering data.
- The absence of a value (NULL marker).
- Returning unduplicated rows (DISTINCT).
- Restriction operators (BETWEEN, IN, LIKE, etc.).
Exercise
Querying multiple tables on different criteria.
3 Querying data from multiple tables
- Concept of joins: Returning information from multiple tables.
- Inner join and outer join.
- The “natural” join... and its difficulties.
- Assembly operators (UNION, INTERSECT...).
- Introduction to views: principle and benefits
Exercise
Creating queries with joins and assembly operators.
4 Ranking and statistics
- Finding aggregate values (MIN, MAX, AVG, SUM, etc.).
- Calculating relative aggregates with GROUP BY.
- Filtering aggregate values with HAVING.
- Mixing aggregates and details with OVER.
- Ranking results with RANK, ROW_NUMBER.
Exercise
Creating queries using simple and aggregate calculations. Subtotals and numbering.
5 Presenting and sorting data
- Presenting data from columns with aliases
- Converting from one type to another.
- Making choices using the CASE operator.
- Sorting data with ORDER BY.
- Operations on character strings and dates.
Exercise
Using functions to improve the presentation of the query result.
6 Using subqueries
- What is a subquery?
- Different types of results.
- Subqueries of lists and IN, ANY/SOME and ALL operators.
- Correlated subqueries.
Exercise
Writing queries that include subqueries of different forms.
Customer reviews
4,5 / 5
Customer reviews are based on end-of-course evaluations. The score is calculated from all evaluations within the past year. Only reviews with a textual comment are displayed.
CHRISTIANE MARIE CAROLLE S.
16/02/26
5 / 5
Very attentive and patient trainer. 3 days of rich and dense training. Lots of practice, which made learning easier. Thanks again to Pascal.
ORELLANA JESUS JAVIER C.
16/02/26
5 / 5
Dense and rich content, well delivered with sufficient time for explanations. Pascal managed the pace very well.
YANNICK B.
16/02/26
5 / 5
Perfect balance between course material and practical exercisesPascal takes the time to use concrete examples
PARTICIPANTS
PREREQUISITES
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
PREREQUISITES
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TEACHING AIDS AND TECHNICAL RESOURCES
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
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