Database Management
Bayani Gaba-gaba
Every organisation collects data, but collecting it is only half the story. A database turns a heap of records into something you can search, sort, validate and report on in seconds. Understanding how databases are structured and queried is a core skill tested across both papers of the Edexcel IGCSE ICT course.
In this lesson you will learn the building blocks of a database, from fields and records to primary keys and relationships. You will explore the five data types Edexcel expects you to recognise, apply validation rules to catch errors at the point of entry, build queries using relational and logical operators, and produce polished outputs including reports and mail-merge documents.
Manufura
- Identify data types: alphanumeric/text, numeric/number, date, currency, logical/Boolean
- Explain the structure of a given database, including record, field, table, primary key/field, foreign key/field, relationships between tables
- Explain the need for validation and identify validation checks such as range check, presence check, type check, length check
- Sort using a single field, multiple fields, ascending/descending order
- Input information to given tables or forms applying format consistently
- Use search/query using single criterion, multiple criteria, search within results, relational operators, logical operators
- Produce outputs: reports, mail merge documents, specified fields, design view (table structure, searches/queries, forms, relationships), data view (table, search/query results, forms)
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Database Management. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which data type should be used for a field storing UK postcodes? A) Numeric B) Alphanumeric/Text C) Currency D) Boolean Answer: B
- What is the purpose of a primary key? A) To link two tables together B) To validate data entered into a field C) To uniquely identify each record in a table D) To sort records in ascending order Answer: C
- Which validation check would ensure that a percentage mark entered is between 0 and 100? A) Presence check B) Type check C) Length check D) Range check Answer: D
- A query uses the criteria: Category = "Fiction" AND Price < 8.00. Which records are returned? A) All Fiction books regardless of price B) All books under 8.00 regardless of category C) Only Fiction books that cost less than 8.00 D) All books that are either Fiction or cost less than 8.00 Answer: C
- Which output type combines database fields with a letter template to produce personalised documents? A) Report B) Query C) Mail merge D) Data view Answer: C
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Relational Database Management Systems
"Introduction to Computer Science: Relational Database Management Systems" by OpenStax, OpenStax, Rice University, licensed under CC BY-NC-SA 4.0 (https://creativecommons.org/licenses/by-nc-sa/4.0/). Source: https://openstax.org/books/introduction-computer-science/pages/8-3-relational-database-management-systems. Access for free at https://openstax.org/books/introduction-computer-science/pages/1-introduction
Wasu ƙungiyoyi ne suka wallafa su ƙarƙashin lasisin buɗe, kuma muna ambaton su yadda suka nema. Hanyoyin suna buɗe shafukansu.
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Database Management? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
Sauke Manhajar Daga Google Playstore
Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
