Does Inheritance Make Sense with This Requirement (Oracle)
I'm using Oracle 12c. Given an existing table (we call it TBL_M), and based on the criteria below, I was wondering if using inheritance makes sense to lay out the entities:
Information for one group of data (we call it Group One):
RATE
AMOUNT
FREQUENCY
And information for another group of data (we call it Group Two):
RATE
AMOUNT
FREQUENCY
DEPTH
So the fields needed for this become:
TBL_P
TBL_P_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_C
TBL_C_ID
DEPTH
TBL_P_ID (fk)
For Group Two, every time we want to make an entry, we populate both tables (TBL_P and TBL_C). However, when the information is for Group One, TBL_P.TBL_M_ID is going to be set to NULL redundantly.
Would it be more efficient to split this into two separate tables, one for Group One, and the other for Group Two? e.g.
TBL_ONE
TBL_ONE_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_TWO
TBL_TWO_ID
RATE
AMOUNT
FREQUENCY
DEPTH
TBL_M_ID (fk)
oracle database-design oracle-12c inheritance
asked 18 mins ago
NuCradleNuCradle
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I'm using Oracle 12c. Given an existing table (we call it TBL_M), and based on the criteria below, I was wondering if using inheritance makes sense to lay out the entities:
Information for one group of data (we call it Group One):
RATE
AMOUNT
FREQUENCY
And information for another group of data (we call it Group Two):
RATE
AMOUNT
FREQUENCY
DEPTH
So the fields needed for this become:
TBL_P
TBL_P_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_C
TBL_C_ID
DEPTH
TBL_P_ID (fk)
For Group Two, every time we want to make an entry, we populate both tables (TBL_P and TBL_C). However, when the information is for Group One, TBL_P.TBL_M_ID is going to be set to NULL redundantly.
Would it be more efficient to split this into two separate tables, one for Group One, and the other for Group Two? e.g.
TBL_ONE
TBL_ONE_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_TWO
TBL_TWO_ID
RATE
AMOUNT
FREQUENCY
DEPTH
TBL_M_ID (fk)
oracle database-design oracle-12c inheritance
asked 18 mins ago
NuCradleNuCradle
1
New contributor
NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I'm using Oracle 12c. Given an existing table (we call it TBL_M), and based on the criteria below, I was wondering if using inheritance makes sense to lay out the entities:
Information for one group of data (we call it Group One):
RATE
AMOUNT
FREQUENCY
And information for another group of data (we call it Group Two):
RATE
AMOUNT
FREQUENCY
DEPTH
So the fields needed for this become:
TBL_P
TBL_P_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_C
TBL_C_ID
DEPTH
TBL_P_ID (fk)
For Group Two, every time we want to make an entry, we populate both tables (TBL_P and TBL_C). However, when the information is for Group One, TBL_P.TBL_M_ID is going to be set to NULL redundantly.
Would it be more efficient to split this into two separate tables, one for Group One, and the other for Group Two? e.g.
TBL_ONE
TBL_ONE_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_TWO
TBL_TWO_ID
RATE
AMOUNT
FREQUENCY
DEPTH
TBL_M_ID (fk)
oracle database-design oracle-12c inheritance
asked 18 mins ago
NuCradleNuCradle
1
New contributor
NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm using Oracle 12c. Given an existing table (we call it TBL_M), and based on the criteria below, I was wondering if using inheritance makes sense to lay out the entities:
Information for one group of data (we call it Group One):
RATE
AMOUNT
FREQUENCY
And information for another group of data (we call it Group Two):
RATE
AMOUNT
FREQUENCY
DEPTH
So the fields needed for this become:
TBL_P
TBL_P_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_C
TBL_C_ID
DEPTH
TBL_P_ID (fk)
For Group Two, every time we want to make an entry, we populate both tables (TBL_P and TBL_C). However, when the information is for Group One, TBL_P.TBL_M_ID is going to be set to NULL redundantly.
Would it be more efficient to split this into two separate tables, one for Group One, and the other for Group Two? e.g.
TBL_ONE
TBL_ONE_ID
RATE
AMOUNT
FREQUENCY
TBL_M_ID (fk)
TBL_TWO
TBL_TWO_ID
RATE
AMOUNT
FREQUENCY
DEPTH
TBL_M_ID (fk)
oracle database-design oracle-12c inheritance
oracle database-design oracle-12c inheritance
asked 18 mins ago
NuCradleNuCradle
1
New contributor
NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 18 mins ago
NuCradleNuCradle
1
New contributor
NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 18 mins ago
NuCradleNuCradle
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New contributor
NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked 18 mins ago
NuCradleNuCradle
1
asked 18 mins ago
NuCradleNuCradle
1
1
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NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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NuCradle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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