$3.$ Explain the purpose of$$bindValue$()$ and why it is called twice in the following code.

QSqlQuery insertAccount;

insertAccount.prepare$("$INSERT INTO Account $($Balance$)$ VALUES $($:balance$)")$;

insertAccount.bindValue$("$:balance", $5000)$;

insertAccount.exec$()$;

long long accountId$1=$ getLatestRowId$()$;

insertAccount.bindValue$("$:balance", $9000)$;

insertAccount.exec$()$;

long long accountId$2=$ getLatestRowId$()$;