Sql Developer Interview Questions

Sql Developer Interview Questions

SQL staat voor Structured Query Language en SQL developers creëren SQL-databases en de programma's die daarmee werken. Ze gebruiken vaak ontwerptabellen en opslagprocedures voor stabiliteit, betrouwbaarheid en prestaties. In een sollicitatiegesprek voor SQL developer stellen werkgevers vaak vragen over uw programmeerkennis en probleemoplossingsvaardigheden.

Meest gestelde sollicitatievragen voor een SQL developer (M/V/X) en hoe te antwoorden

Question 1

Vraag 1: Wat zijn de typen sleutels in SQL en wanneer gebruikt u ze?

How to answer
Zo antwoordt u: Met deze vraag kunt u uw kennis van SQL aantonen. Bespreek de meest voorkomende typen SQL-sleutels en vertel over hoe ze rijen en kolommen in tabellen kunnen identificeren. Sleutels werken als unieke id's, waarmee gebruikers eenvoudig gegevens kunnen ophalen.
Question 2

Vraag 2: Welke typen normalisatie zijn beschikbaar in SQL en hoe gebruikt u ze?

How to answer
Zo antwoordt u: SQL-normalisatie wordt gebruikt voor het organiseren van gegevens en het verminderen van redundanties. U kunt uw ervaring demonstreren door de normalisatiemethoden te bespreken die u het meest gebruikt. Veel ontwikkelaars splitsen bijvoorbeeld een grote tabel op in meerdere kleinere tabellen zodat ze leesbaarder worden.
Question 3

Vraag 3: Met welke programmeertalen bent u vertrouwd?

How to answer
Zo antwoordt u: Veel SQL developers gebruiken ook JavaScript, HTML, Python, PL/SQL en andere talen. Noem de talen die u kent en hoe u deze hebt gebruikt in uw vorige baan. Vertel de vragensteller ook over programmeringscertificeringen die u hebt ontvangen.

2,216 sql developer interview questions shared by candidates

what is materialized view and why it is required?what is pivot? when to use the non-clustered index and when to use clustered one.what will you do if your database is growing out of size?how to optimize the query or stored proc? how to read execution plan and what steps to take on it? write query which can add row number column for a table? what is partition? diff between temp table and temp table variable? scope of global variable? there are two tables both have only one column which accepts null, both table have 5 rows as 1,1,1,1,null. how many rows will come for inner join, left, right, union and union all on these two tables.(try this on SSMS)? High level design for employee, tasks and timesheet scenario etc
avatar

SQL Server Developer

Interviewed at Fulcrum Worldwide

4.2
Jan 20, 2014

what is materialized view and why it is required?what is pivot? when to use the non-clustered index and when to use clustered one.what will you do if your database is growing out of size?how to optimize the query or stored proc? how to read execution plan and what steps to take on it? write query which can add row number column for a table? what is partition? diff between temp table and temp table variable? scope of global variable? there are two tables both have only one column which accepts null, both table have 5 rows as 1,1,1,1,null. how many rows will come for inner join, left, right, union and union all on these two tables.(try this on SSMS)? High level design for employee, tasks and timesheet scenario etc

2 rounds of interview with one is tech and other is manager round. Both of them almost Easy to Mid level and manageable. 2 rounds of interview with one is tech and other is manager round. Both of them almost Easy to Mid level and manageable.
avatar

SQL Developer

Interviewed at Lowell

3
Jul 26, 2023

2 rounds of interview with one is tech and other is manager round. Both of them almost Easy to Mid level and manageable. 2 rounds of interview with one is tech and other is manager round. Both of them almost Easy to Mid level and manageable.

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