Interrogating Data

Interrogating means asking questions to find something out. In information technology, interrogating means to get information from a database.

Questions for a database

A question for a database is called a query.

Queries

A query must be made in the right way for the database to respond.
An example of a query is to find all the boys who scored more than 80% in a test in a database.

Interrogation of results

Using a search engine is a way of interrogating a large database.
- One example of a search engine is Google.
- One example of a large database is the World Wide Web.

Be careful!

You need to be careful when using the results of our interrogation (query).
- The results of a query can be wrong or misleading.
- The results of a query are only as good as the data in the database.

1Using Computers

1.1Computers as a Tool

1.1.1Uses of Computers

1.1.2More Uses of Computers

1.1.3Advantages of Information Technology

1.1.4More Advantages of Information Technology

1.2Data

1.2.1Storing Data

1.2.2Databases

1.2.3Sorting & Filtering Data

1.2.4Interrogating Data

1.3Plagiarism & Illegal Sharing

1.3.1Plagiarism

1.3.2Copyrighted Content

2Networks & the World Wide Web

2.1Networks

2.1.1Parts of Networks

2.1.2The Internet

2.1.3The World Wide Web

2.2Searching Online

2.2.1Searching the World Wide Web

2.2.2Searching Tips

2.2.3Reliable Information

2.3Protecting Yourself Online

2.3.1Your Digital Footprint

2.3.2Being Safe

2.3.3Online Safety

2.3.4Viruses

2.3.5Malware

2.3.6People Online

2.3.7Your Feelings

2.3.8Getting Help

3Computational Thinking

3.1Computational Thinking

3.1.1Computational Thinking

3.1.2Decomposing Tasks

3.1.3Algorithms (1/2)

3.1.4Algorithms (2/2)

3.1.5Logical Reasoning & Debugging

4Computer Languages

4.1Coding

4.1.1Code

4.1.2Programs

4.1.3Writing Programs

4.1.4Writing Your Own Program: Input, Outputs, Design

4.1.5Turning an Algorithm into an App (1/2)

4.1.6Turning an Algorithm into an App (2/2)

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