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Web Development Essentials

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Q_01 domain/031 · medium single discuss →

A development team is deciding between two data storage technologies. One project needs a flexible, schema-less document store, while another needs a traditional table-based store with strict relationships. According to the web application architecture objective, which pair of technologies correctly matches the non-relational (NoSQL) requirement and the relational requirement respectively?

A MongoDB for the document store; PostgreSQL for the relational store
B MySQL for the document store; Redis for the relational store
C MariaDB for the document store; CouchDB for the relational store
D SQLite for the document store; MongoDB for the relational store

Q_02 domain/031 · medium single discuss →

A developer must ensure that a value used inside a SQL query submitted from a web form cannot be exploited to alter the query's structure. According to the SQL Basics objective, which practice directly addresses this risk?

A Escaping variables used in SQL queries to avoid SQL injection
B Combining data across multiple tables using joins
C Defining primary keys on every column of the table
D Closing the database connection with Database.close() after each query

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