Hierarchical schema in DBMS in Hindi

Hierarchical schema, jise Hierarchical Data Model ke roop mein bhi jaana jaata hai, ek database management system (DBMS) concept hai, jisme data ko tree-like structure mein organize kiya jaata hai.

Hierarchical schema in DBMS in Hindi

Hierarchical schema mein data ko parent-child relationship ke madhyam se darshaaya jaata hai, jahaan ek parent node se multiple child nodes jude hote hain.

DBMS के ये Topics के बारे में जानें :-

Hierarchical schema mein data ko tree structure ke roop mein darshaaya jaata hai, jahaan har node (record) child nodes (subordinate records) ke saath jude hote hain. Har node ka ek parent node hota hai, lekin parent node multiple child nodes ke saath jude ho sakta hai. Hierarchical schema mein data ek hierarchically organized manner mein store kiya jaata hai, jisme har node ka ek unique identifier hota hai aur unhe logical sequence ke according access kiya jaata hai.

Kuch mukhya tatva Hierarchical schema ke hain:

  1. Root Node: Hierarchical schema mein ek root node hota hai, jise root record ya top-level record ke roop mein jaana jaata hai. Ye sabse uppermost node hota hai, jisme data hierarchy ka shuruaati point hota hai.

  2. Parent-Child Relationship: Hierarchical schema mein har node (record) ka ek parent node hota hai. Har parent node multiple child nodes (subordinate records) ke saath jude hote hain. Parent-child relationship ko hierarchically define kiya jaata hai, jahaan parent node se child node tak ek directional association hoti hai.

  3. One-to-Many Relationships: Hierarchical schema mein one-to-many relationships common hote hain. Ek parent node multiple child nodes ko contain kar sakta hai, lekin ek child node sirf ek parent node ke saath jude ho sakta hai. Isse data ko hierarchically organize karne mein sahayata milti hai.

  4. Navigational Access: Hierarchical schema mein data retrieval aur manipulation navigational access ke through hota hai. Data ko access karne ke liye, specific paths (parent-child relationships) ko follow kiya jaata hai. Record navigation ke liye, programmers ko explicit programming logic ka istemal karna padta hai.

  5. Data Redundancy: Hierarchical schema mein data redundancy ka samay-samay par upyog hota hai. Kyunki data multiple child nodes ke saath shared nahi ho sakta hai, isliye data redundancy ke maamle mein caution ki zaroorat hoti hai.

Hierarchical schema ka upyog primarily hierarchical data structures aur relationships ko darshaane ke liye kiya jaata hai. Iska upyog pehle jyadatar mainframe systems aur early database management systems mein kiya jaata tha. Aajkal Relational Model aur Object-Oriented Model jaise modern data models adhik prachalit hain, kyunki unme data relationships aur data access flexibility ka adhik control hota hai.

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