Lesson 11
Queries in Base
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Answer: A Query is a request to retrieve specific data from a database. It helps in filtering, sorting, and analyzing data efficiently.
(Query āĻšāϞ āĻāĻ āĻŦিāĻļেāώ āĻ āύুā§°োāϧ, āϝিā§ে Database-ā§° āĻĒā§°া āύিāϰ্āĻĻিāώ্āĻ āϤāĻĨ্āϝ āĻāϞিā§াāĻ āĻāύে। āĻ āĻĄাāĻা āϏ⧰āϞীāĻā§°āĻŖ, filtering, āĻā§°ু āĻŦিāĻļ্āϞেāώāĻŖ āĻā§°াāϤ āϏāĻšাā§ āĻā§°ে।)
Answer: 1. Select Query
2. Action Query
3. Parameter Query
4.SQL Query
(LibreOffice Base-āϤ Select Query, Action Query, Parameter Query, āĻā§°ু SQL Query āĻĒ্ā§°āϧাāύāĻৈ āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°া āĻšā§।)
Answer: It retrieves specific data from one or more tables. It allows filtering and sorting data.
4. What is an Action Query? (Action Query āĻি?)
(Action Query-āĻ Database-āϤ āĻĒā§°িāĻŦāϰ্āϤāύ āĻāύে, āϝেāύ Insert, Update, āĻā§°ু Delete āĻā§°াāϤ āϏāĻšাā§ āĻā§°ে।)
5. What is a Parameter Query? (Parameter Query āĻি?)
(Parameter Query-āĻ Query āĻāϞোā§ąাā§° āĻāĻāϤে User-ā§° āĻĒā§°া āĻāύāĻĒুāĻ āĻŦিāĻাā§°ে, āϝাāϤে āĻĒā§°িā§ąāϰ্āϤāύāĻļীāϞ āĻĢāϞাāĻĢāϞ āĻāϞিā§াāĻ āĻāύিāĻŦ āĻĒাā§°ে।)
6. What is an SQL Query? (SQL Query āĻি?)
(SQL Query āĻšāϞ Structured Query Language (SQL)-āϤ āϞিāĻা āĻāĻ āĻĒ্ā§°āĻļ্āύ, āϝিā§ে Database-ā§° āĻĒā§°া āϤāĻĨ্āϝ āĻāϞিā§াāĻ āĻāύে āĻŦা āĻĒā§°িāĻŦāϰ্āϤāύ āĻā§°ে।)
7. How can you create a Query in LibreOffice Base? (LibreOffice Base-āϤ Query āĻেāύেāĻৈ āϏৃāώ্āĻি āĻā§°িāĻŦ?)
(LibreOffice Base āĻুāϞāĻ → Queries-āϤ āĻ্āϞিāĻ āĻā§°āĻ → Wizard āĻŦা SQL Mode āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°ি Query āϏৃāώ্āĻি āĻā§°āĻ।)
8. What is the difference between a Table and a Query? (Table āĻā§°ু Query-ā§° āĻŽাāĻāϤ āĻĒাā§°্āĻĨāĻ্āϝ āĻি?)
Table: Stores raw data permanently.
Query: Retrieves and processes data temporarily.
9. What is Sorting in Queries? (Query-āϤ Sorting āĻি?)
(Sorting-āĻ Data-āĻে ascending āĻŦা descending ā§°ীāϤি āĻ āύুāϏ⧰ি āϏāĻাāĻ āĻĻিā§ে।)
10. What is Filtering in Queries? (Query-āϤ Filtering āĻি?)
(Filtering-āĻ āύিāĻĻিāώ্āĻ āĻļāϰ্āϤ āĻ āύুāϏ⧰ি āĻেā§ąāϞ āύিāϰ্āĻĻিāώ্āĻ data āĻĻেāĻুā§ąাā§।)
11. What are Aggregate Functions in Queries? (Query-āϤ Aggregate Functions āĻি?)
Examples: SUM(), AVG(), COUNT(), MAX(), MIN().
12. What is the purpose of the WHERE clause in a Query? (Query-āϤ WHERE Clause-ā§° āĻāĻĻ্āĻĻেāĻļ্āϝ āĻি?)
(WHERE Clause-āĻ Query-āϤ āύিā§°্āĻĻিāώ্āĻ āĻļāϰ্āϤ āĻāϞ্āϞেāĻ āĻā§°িāĻŦāϞৈ āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°া āĻšā§।)
13. What is the difference between the HAVING and WHERE clause? (HAVING āĻā§°ু WHERE Clause-ā§° āĻŽাāĻāϤ āĻĒাā§°্āĻĨāĻ্āϝ āĻি?)
(WHERE-āĻ Group āĻā§°াā§° āĻāĻāϤেāĻ āĻļāϰ্āϤ āĻĒ্ā§°ā§োāĻ āĻā§°ে, āĻā§°ু HAVING-āĻ Group āĻā§°াā§° āĻĒাāĻāϤ āĻļāϰ্āϤ āĻĒ্ā§°ā§োāĻ āĻā§°ে।)
14. What is the use of the ORDER BY clause in Queries? (Query-āϤ ORDER BY Clause-ā§° āĻŦ্āĻ¯ā§ąāĻšাā§° āĻি?)
(ORDER BY-āĻ Query-ā§° āĻĢāϞাāĻĢāϞ ascending āĻŦা descending ā§°ূāĻĒāϤ āϏāĻাāĻ āĻĻেāĻুā§ąাā§।)
15. What is the advantage of using Queries in a database? (Database-āϤ Query āĻŦ্āĻ¯ā§ąāĻšাā§°ā§° āϏুāĻŦিāϧা āĻি?)
Answer:
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It helps retrieve specific data quickly.
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It reduces manual searching.
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It allows data analysis and reporting.
(Query-āĻ āĻĻ্ā§°ুāϤ āĻĄাāĻা āĻāϞিā§াāĻ āĻāύে, āĻšāϏ্āϤāĻাāϞিāϤ āϏāύ্āϧাāύ⧰ āĻĒ্ā§°ā§োāĻāύ āύাāĻĨাāĻে, āĻā§°ু āĻĄাāĻা āĻŦিāĻļ্āϞেāώāĻŖ & āĻĒ্ā§°āϤিāĻŦেāĻĻāύ āϤৈā§াā§° āĻā§°াāϤ āϏāĻšাā§ āĻā§°ে।)