HBASE嵌套数据模型

时间:2013-10-28 12:20:30

标签: hbase

HBASE版本:0.94.10

NOSQL设计初级保健系统数据模型的新手。我有标准化的样本数据库关系模型,例如HBASE-0.94.0

Patient table: 

============ 

1) Patient_id - PK 

2) Added_BY 

3) Gender 

4) Usual_GP 

Patient Name table: [One to many relationship with patient [One] Name[Many]] 

1) Name_id 

2) Patient_id - FK 

3) Name_type 

4) First name 

5) Last Name 

6) Middle name 

Patient address table: [One to many relationship with patient [One] address[Many]] 

1) Address_id 

2) Patient_id - FK 

3) Address_type 

4) Line1 

5) Line2 

6) Line 3 

7) Line 4 

8) Line 5 

Patient Phone table: [One to many relationship with patient [One] Phone[Many]] 

1) Phone_id 

2) Patient_id - FK 

3) PhoneType 

4) Phoneno 

5) ext 

Medication and other details 

1)Entry_id 

2)Patient_id - FK [One to many relationship with patient [One] Medication[Many]] 

3)Start_date 

4)End_date 

5)Code 

6)Medicine description 

7)Dosage details 

8) Number of authorised 

9) Number issued 

对于上面的规范化数据模型,我在下面创建了样本NoSQL数据模型,i Hope数据模型适用于Document base NOSQL。需要将下面的数据模型转换为基于HBASE列的数据模型,请帮帮我。

Patient :{Patient_id:22, 

              Added_by:Doctor1, 

              Gender:Male, 

              UsualGP: Doctor2, 

              PatName:[ 

              {NameType:Usual, FirstName:Hari, LastName:prasad,Middlename:' '}, 

              {NameType:Other, FirstName:John,LastName:prasad,Middlename:kenndy}  

              ] 

              PatAddr:[ 

              {AddType:Usual, Line1:2, Line2:Harrington road, Line3: near central, Line4:Newyork,Line5:NY008}, 

              {AddType:Tmp, Line1:2, Line2:Mylapore road, Line3: near Zoo, Line4:WashingtonDC,Line5:WA00098} 

              ] 

              PatPhone:[ 

              {PhoneType:Usual, Phoneno:4453443344, ext:099}, 

              {PhoneType:Tmp, Phoneno:9198332342343, ext:} 

              ] 

              PatMedication:[ 

              {MedStardate:'01/01/2013', MedEndDate:'', Code:'Snomode', MedDesc:'Paracetmol', DosDet:'Take 2 daily', Noauth: 5, Issue: 3}, 

              {MedStardate:'01/05/2013', MedEndDate:'01/05/2013', Code:'readcode', MedDesc:'Avil', DosDet:'Take 1 daily', Noauth: 3, Issue: 1}, 

              {MedStardate:'01/10/2013', MedEndDate:'24/10/13', Code:'readcode', MedDesc:'Metacin', DosDet:'Take 2 daily', Noauth: 5, Issue: 3}, 

              ] 

             }

1 个答案:

答案 0 :(得分:1)

如评论中所述,HBase用于非关系数据。但是,您仍然可以将其用于此目的。首先,您应该定义列族。不需要列名称,因为它是柱状形式。

将这些列放在同一列族中会提高性能。因此,一个列族就会很好。除此之外,列和列族名称短也是另一个性能问题。如果可以,请用一个或两个字母命名这些列和列变量。

但是,您不能按原样使用外键。我的意思是,您可以将另一个表的id存储在一列中,但不能直接检查它是否存在。相反,您应该转到此表并手动检查它。

我希望这个解释会对你有所帮助。查看this了解详情。