/// Database schema contains several unique indexes to guard against adding
/// multiple hosts for the same client identifier in a single subnet and for
/// adding multiple hosts with a reservation for the same IPv4 address in a
-/// single subnet. The exceptions that has to be taken into account are
+/// single subnet. The exceptions that have to be taken into account are
/// listed below:
/// - zero or null IPv4 address indicates that there is no reservation for the
/// IPv4 address for the host,
/// - zero or null subnet identifier (either IPv4 or IPv6) indicates that
/// this subnet identifier must be ignored. Specifically, this is the case
-/// when host reservation is created DHCPv4 server, the IPv6 subnet id should
-/// be ignored. Conversely, when host reservation is created for DHCPv6 server,
+/// when host reservation is for the DHCPv4 server, the IPv6 subnet id should
+/// be ignored. Conversely, when host reservation is created for the DHCPv6 server,
/// the IPv4 subnet id should be ignored.
///
/// To exclude those special case values from the unique indexes, the MySQL
/// Database schema contains several unique indexes to guard against adding
/// multiple hosts for the same client identifier in a single subnet and for
/// adding multiple hosts with a reservation for the same IPv4 address in a
-/// single subnet. The exceptions that has to be taken into account are
+/// single subnet. The exceptions that have to be taken into account are
/// listed below:
/// - zero or null IPv4 address indicates that there is no reservation for the
/// IPv4 address for the host,
/// - zero or null subnet identifier (either IPv4 or IPv6) indicates that
/// this subnet identifier must be ignored. Specifically, this is the case
-/// when host reservation is created DHCPv4 server, the IPv6 subnet id should
-/// be ignored. Conversely, when host reservation is created for DHCPv6 server,
-/// the IPv4 subnet id should be ignored.
+/// when host reservation is created for the DHCPv4 server, the IPv6 subnet id
+/// should be ignored. Conversely, when host reservation is created for the
+/// DHCPv6 server, the IPv4 subnet id should be ignored.
///
/// To exclude those special case values, the Postgres backend uses partial
/// indexes, i.e. the only values that are included in the index are those that