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Programador Sql Interview Questions

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Programador Sql Interview Questions

SQL son las siglas de Structured Query Language (lenguaje de consulta estructurado) y un programador SQL es la persona encargada de crear bases de datos SQL y las aplicaciones que funcionan con ellas. Por lo general, utilizan tablas de diseño y recursos de almacenamiento para mayor estabilidad, fiabilidad y rendimiento. En una entrevista para un puesto de programador SQL, pueden hacerte preguntas sobre tus conocimientos de programación y habilidades de resolución de problemas.

Preguntas de entrevista más frecuentes para programador/a SQL y cómo responderlas

Question 1

Pregunta n.º 1: ¿Qué tipos de claves existen en SQL y cuándo las usarías?

How to answer
Respuesta recomendada: Esta pregunta te permite mostrar tus conocimientos de SQL. Explica los tipos más comunes de claves en SQL e indica cómo pueden identificar filas y columnas en las tablas. Las claves funcionan como identificadores únicos, lo que permite que los usuarios recuperen los datos con facilidad.
Question 2

Pregunta n.º 2: ¿Qué tipos de normalización existen en SQL y cuándo los usas?

How to answer
Respuesta recomendada: La normalización en SQL suele utilizarse para organizar datos y reducir redundancias. Puedes demostrar tu experiencia explicando los métodos de normalización que más usas. Por ejemplo, muchos programadores dividen una tabla grande en varias más pequeñas para facilitar la lectura.
Question 3

Pregunta n.º 3: ¿Con qué lenguajes de programación estás familiarizado?

How to answer
Respuesta recomendada: Muchos desarrolladores usan además JavaScript, HTML, Python, PL/SQL y otros lenguajes. Enumera los lenguajes que conoces y explica cómo los has usado en tu empleo anterior. Además, menciona los títulos de programación que posees.

710,925 programador sql interview questions shared by candidates

Build a key-value data structure that allows the user to take a snapshot of the data. The user can read the key-value store from any snapshot. Structure has the normal key/value like methods plus something like snapshot = dataStructure.takeSnapshot() value = dataStructure.get(key, snapshot) void dataStructure.deleteSnapshot()
avatar

Software Engineer

Interviewed at Rubrik

3.4★
May 10, 2017

Build a key-value data structure that allows the user to take a snapshot of the data. The user can read the key-value store from any snapshot. Structure has the normal key/value like methods plus something like snapshot = dataStructure.takeSnapshot() value = dataStructure.get(key, snapshot) void dataStructure.deleteSnapshot()

Soft Skill question: How did you manage to solve a specific problem in the past? With what means? Questions that you have to answer on e.g video format before the interview: 1) Why have you applied for this position? 2) What will you bring to this particular role? 3) What do you expect from this position? Then a set of technical questions sent to you by email (answer before the interview) 1.Explain when and why you would use multi-threading programming? 2. When you would use templates over inheritance? (C++) Please explain. 3. In your opinion What is the most important change in C++ in the last 10 years, explain why. 4. A process is having performance issues but you do not know where exactly the problem is. Which tools would you use to diagnose the problems and how? Please start with basic system tools expected on any system first and with the possibility to add more advanced tools second. 5. Give a code example of a ranged for statement in C++. 6. What is the difference between Abstract and Interface classes (C++)? 7. How you would implement the error handing for a function controlling a piece of hardware? You can write the pseudo code if needed. (C++) 8. What is difference between C++ shared_ptr and unique_ptr. When would you use each of them. 9. What is C++ uniform initialization, please give a couple of code examples. 10. What is a python decorator and when you would use it. 11. Explain what is a python lambda function and give a code example. 12. What would be your criteria to decide when to implement a tool in C++ or Python
avatar

Software Engineer

Interviewed at European Southern Observatory

3.8★
Mar 1, 2020

Soft Skill question: How did you manage to solve a specific problem in the past? With what means? Questions that you have to answer on e.g video format before the interview: 1) Why have you applied for this position? 2) What will you bring to this particular role? 3) What do you expect from this position? Then a set of technical questions sent to you by email (answer before the interview) 1.Explain when and why you would use multi-threading programming? 2. When you would use templates over inheritance? (C++) Please explain. 3. In your opinion What is the most important change in C++ in the last 10 years, explain why. 4. A process is having performance issues but you do not know where exactly the problem is. Which tools would you use to diagnose the problems and how? Please start with basic system tools expected on any system first and with the possibility to add more advanced tools second. 5. Give a code example of a ranged for statement in C++. 6. What is the difference between Abstract and Interface classes (C++)? 7. How you would implement the error handing for a function controlling a piece of hardware? You can write the pseudo code if needed. (C++) 8. What is difference between C++ shared_ptr and unique_ptr. When would you use each of them. 9. What is C++ uniform initialization, please give a couple of code examples. 10. What is a python decorator and when you would use it. 11. Explain what is a python lambda function and give a code example. 12. What would be your criteria to decide when to implement a tool in C++ or Python

They asked me to extract words from the parse tree. e.g. ((NJ (NN James) XX is) (AJ tall)) -> James is tall. Another question is to reverse a string an capitalize all the starting positions of words and lower case all the ending positions of words. e.g. Hello World -> Dlrow Olleh
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Entry Level Cognitive Software Engineer

Interviewed at IBM

3.9★
Oct 9, 2016

They asked me to extract words from the parse tree. e.g. ((NJ (NN James) XX is) (AJ tall)) -> James is tall. Another question is to reverse a string an capitalize all the starting positions of words and lower case all the ending positions of words. e.g. Hello World -> Dlrow Olleh

There were 2 questions: 1 design and 1 implementation. The design was something like the following: you have a billion google searches a day, design a data structure which lets you pull out the top 100 unique ones at the end of the day.
avatar

Software Engineer

Interviewed at Google

4.4★
Oct 20, 2009

There were 2 questions: 1 design and 1 implementation. The design was something like the following: you have a billion google searches a day, design a data structure which lets you pull out the top 100 unique ones at the end of the day.

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