1. Which of the following is not part of a standard SQL statement? a. Importable programming libraries b. Predicate c. Expressions d. Clauses

Provide directional explanations for the design flaws. Most pointers in programming languages can only refer to one particular sort of variable.

When writing queries in a programming language, why should we avoid creating a query by concatenating strings and instead use prepared statements or stored procedures in defense against SQL injection?   a. concatenating strings helps prevent sql injection   b. prepared statements or stored procedures help prevent the user/hacker from deliberately modifying the query by injecting sql instructions in the input values   c. prepared statements prevent the query from taking as long to execute   d. prepared statements enable the developer to just supply values without injecting sql

How and when would one know it's appropriate to use null in Java?