Java · Theory

DatabaseMetaData

Theory

254/270

DatabaseMetaData

DatabaseMetaData: state the definition in one sentence. For DatabaseMetaData, know the key keywords / API types involved.

Be ready with one tiny runnable DatabaseMetaData example.

Mention one common DatabaseMetaData mistake and the fix.

Write one tiny example for DatabaseMetaData. Compile, print one result, and say the output out loud before you type.

Use DatabaseMetaData only when the problem needs it. Don’t force it into every program. Know one beginner trap.

Let's take this on the board with one tiny Main class — no extra files. Output: Asha scored 72 then Pass. Real Main. Swap marks/name to show one idea from DatabaseMetaData. Start from main, go line by line, and stop at each print. That output is the proof for DatabaseMetaData.

Exam tip

Explain DatabaseMetaData as: definition → why → one code idea.

Example

// DatabaseMetaData
public class Main {
  public static void main(String[] args) {
    int marks = 72;
    String name = "Asha";
    System.out.println(name + " scored " + marks);
    if (marks >= 40) System.out.println("Pass");
  }
}

Output: Asha scored 72 then Pass. Real Main. Swap marks/name to show one idea from DatabaseMetaData.

Short notes

DefDatabaseMetaData is a Java idea you should explain with one small example.
RuleKnow the keyword / API used for DatabaseMetaData. Type a tiny Main and print one result.
RememberFor DatabaseMetaData, say the output before you code.
TrapDatabaseMetaData — only memorising the heading. No example, no trap.
Define DatabaseMetaData
Key keyword / API

// DatabaseMetaData public class Main { public static void main(String[] args) { int marks = 72; String name = "Asha"; System.out.println(name + " scored " + marks); if (marks >= 40) System.out.println("Pass"); } }

DatabaseMetaData

Example

Short notes

Questions

DatabaseMetaData

Example

Short notes

Questions