time fields

Hello world

I created a small database and one of the tables must have the time fields, I've ever used. The target table is a CALENDAR and its fields must be 'id_schedule', 'id_doctor', 'date', 'start_time', and 'finish_time '. Its purpose is to bring together the records of specific times of a certain day one where a doctor will be assigned to work.

I have something like:

create table attached
(id_schedule number (5) Primary Key,)
id_doctor number (5) references doctor (id_doctor).
date of date_schedule,
start_time time,
finish_time time,
check (finish_time > start_time)
);

I get the error: "invalid data type.

In addition, is this how I should architect this table, I mean, something like this work properly? The times of departure and arrival for some days?

Thank you

Chiapa

Hi, Chiapa,

Chiapa wrote:
Hello world

I created a small database and one of the tables must have the time fields, I've ever used. The target table is a CALENDAR and its fields must be 'id_schedule', 'id_doctor', 'date', 'start_time', and 'finish_time '. Its purpose is to bring together the records of specific times of a certain day one where a doctor will be assigned to work.

I have something like:

create table attached
(id_schedule number (5) Primary Key,)
id_doctor number (5) references doctor (id_doctor).
date of date_schedule,
start_time time,
finish_time time,
check (finish_time > start_time)
);

I get the error: "invalid data type.

Right; There is no TIME data type. (No wonder that you have never used it!)

In addition, is this how I should architect this table, I mean, something like this work properly? The times of departure and arrival for some days?

Why not make start_time and finish_time two DATEs? (Remember, DATEs in Oracle, always include the hours, minutes and seconds.) The name of 'DATE' is a little misleading). In this way, you have a shift that began at, say, 23:00 on 5 December 2012 and ending at 07:00 on 6 December. Call thedate_date_hour and finish_ start_ columns if you wish.
You need a column separate date_schedule.

Aside from that, your code seems to be well. The CHECK constraint, in particular, looks like a good idea; You can do the same thing if start_time and finsih_time are the two DATEs.

Tags: Database

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