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Published byRoss French Modified over 9 years ago
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Database ◦ A place where data can be stored and retrieved. Objects ◦ An option you can manipulate. Eg. Tables, forms, queries. Tables ◦ Tables are used to store the data being managed
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Forms ◦ Forms provide a way of displaying and entering data. Reports ◦ Reports let you print or view data in a useful format Queries ◦ A way of storing and answering questions within the database
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Libraries Birth Papers Drivers Permits Passports Facebook
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Advantages ◦ No specific training required Disadvantages ◦ Data is often duplicated ◦ Time consuming ◦ Inconsistency of data ◦ Data cannot be shared easily
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A computerized database where data can be stored in a structured and organized way so that data can be retrieved much faster.
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Advantages ◦ Information can be retrieved faster ◦ Data duplication is reduced ◦ Increased Security ◦ Less errors ◦ Reduces long term storage costs Disadvantages ◦ Specialized software needed ◦ They can be expensive to implement and hard to maintain ◦ Sometimes time consuming
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DATA TYPEPURPOSE TextUsed to store alphanumeric characters (letters or numbers). Et. Name, address, phone number, country NumberUsed to store numbers with or without decimal places. Eg. Age, average, quantity. CurrencyUsed to store money values. Eg. Salary, price, discount Date/TimeUsed to store date/time values. Eg. Date of bith, date joined, death date AutonumberCreates automatic numbers. Eg. ID number MemoUsed to store long text notes or paragraphs. Eg. Remarks Yes/NoUsed to store yes or no. eg. Pass or Fail
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A table is a collection of records. It is made of a set of rows and columns The information entered into the database is stored in a table
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A record is a collection of related fields. It contains a single row and many columns. ◦ Eg. The record of a persons existence is a birth paper. It contains one row but many fields that are related. FIRSTNAME, SURNAME, PLACE OF BIRTH, MOTHER, FATHER, HOSPITAL. Everything is related to the reason the person is in the database.
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A field is a single column in a table that stores data. A field can also be referred to as an attribute. ◦ Eg. NAME, AGE, DATE OF BIRTH, PHONE NUMBER, ADDRESS, SEX.
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It is the type of data that a field can store. ◦ Eg. ◦ The AGE FIELD would store a number ◦ The FIRST NAME FIELD would store text
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A field description describes what is in the field. The description helps other users of the database to understand what it is used for.
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Design View ◦ Where you design the database, label the fields, choose the field type and enter a field description.
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Datasheet View ◦ Where you enter information into the database that you created.
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FIELD NAMEDATA TYPEDESCRIPTION STORM NAMETEXTNAME OF THE STORM ORIGINTEXTPLACE WHERE IT ORIGINATED DATE OF ORIGINDATE/TIMEDATE STORM WAS FORMED CATEGORYNUMBERCATEGORY FROM 1 TO 5 MAJOR HURRICANEYES/NOWHETHER THE STORM BECAME A MAJOR HURRICANE
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Storm NameOriginDate of Origin CategoryMajor Hurricane BerthaCoast of Africa 3/07/20083Yes DollyCaribbean Sea 20/07/20082No GustaveWinward Islands 25/08/20084Yes HannaLeeward Islands 28/08/20072No KyleCaribbean Sea 29/09/20072No
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FIELD NAMEDATA TYPEDESCRIPTION First NameText SurnameText AgeNumber Primary SchoolText Secondary SchoolText Favourite SubjectText Favourite time of DayDate/Time Favourite ArtistText Love School?Yes/No Love SleepYes/No FILL THE TABLE WITH 10 PEOPLE
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Field NameData TypeDescription Customer IDTextCustomer ID Last NameTextLast Name First NameTextFirst Name AddressTextAddress Birth DateDate/TimeDate of Birth Home TelTextHome Telephone Work TelTextWork Telephone EmailTextEmail Address GenderTextGender Work PlaceTextPlace of Employment
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Field NameData TypeDescription DvdIDText6 Digit Unique Number TitleTextEnter Title TypecodeText2 digit code RatedTextRating MinsNumberMinutes CostCurrencyCost of DVD QuantityNumberQuantity in Stock
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