MELJUN CORTES Microsoft Access 2000


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MELJUN CORTES Microsoft Access 2000

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MELJUN CORTES Microsoft Access 2000

  1. 1. Microsoft Access 2000 Database and TablesMELJUN CORTES
  2. 2. Setting up a DatabaseTo get started with Access 2000, we first create a database:1) Start Access 2000.2) In the Microsoft Access dialog box, select Blank Database, then click OK.3) In the File New Database window, decide where to store the database.4) Click Create. rvg
  3. 3. TablesThe first object to be added to adatabase is a table.The rows in the tables are calledRECORDS.The columns in the tables are calledFIELDS. A field contains specificpiece of data with a record. rvg
  4. 4. Tables PRIMARY KEY (or UniqueIdentifier) is a field thatuniquely identifies each recordin the table. rvg
  5. 5. Creating TablesCreate Table in Design View.Create Table by using WizardCreate Table be Entering Data rvg
  6. 6. Creating TablesIn creating a table, we describe theSTRUCTURE of the table by describingthe fields.For each field, we indicate the following: Field Name - unique name within the table Data Type - indicates the type of data which a field can contain Description - detailed description of the field rvg
  7. 7. Field NamesThe rules for field names are: Names should be unique within a table, e.g., the same names cannot be used for two different fields in the same table. Names can be up to 64 characters in length. Names can contain letters, digits, spaces and most punctuation marks. Names cannot contain periods, exclamation point (!), or square brackets ([]). rvg
  8. 8. DATA TYPESText AutonumberMemo Yes/NoNumber OLE ObjectDate/Time HyperlinkCurrency rvg
  9. 9. TEXTUSE: Text or combinations of text and numbers, such as addresses. Also, numbers that do not require calculations.SIZE: Up to 255 charactersEXAMPLES: Phone numbers, Postal codes. rvg
  10. 10. MEMOUSE: Lengthy text and numbersSIZE: Up to 64,000 charactersEXAMPLES: Notes, Descriptions rvg
  11. 11. NUMBERUSE: Numeric data to be used for mathematical calculations, except calculations involving money.SIZE: 1, 2, 4, or 8 bytes. 16 bytes for Replication ID (GUID) only. rvg
  12. 12. NUMBERFIELD SIZE: Byte, Integer, Long Integer, Single, Double, Replication IDFORMAT: General Number, Currency, Fixed, Standard, Percent, Scientific rvg
  13. 13. DATE/TIMEUSE: Dates and times.SIZE: 8 bytes.FORMAT: General Date, Long Date, Medium Date, Short Date rvg
  14. 14. CURRENCYUSE: Currency values. Use the Currency data type to prevent rounding off during calculations. Accurate to 15 digits to the left of the decimal point and 4 digits to the right.SIZE: 8 bytesFORMAT: General Number, Fixed, Standard, Percent, Scientific rvg
  15. 15. AUTONUMBERUSE: Unique sequential (incrementing by 1) or random numbers automatically inserted when a record is added.SIZE: 4 bytes. 16 bytes for Replication ID (GUID) only. rvg
  16. 16. AUTONUMBERFIELD SIZE: Long Integer, Replication ID.NEW NUMBER: Increment by One Random Number Replication ID (also referred to as GUID - globally unique identifier) rvg
  17. 17. YES/NOUSE: Fields that will contain only one of two values.SIZE: 1 bitFORMAT: Yes/No, True/False, On/Off rvg
  18. 18. OLE OBJECTUSE: Objects created in other programs using the OLE protocol, that can be linked to or embedded in a Microsoft Access table.SIZE: Up to 1 GB (limited by disk space)EXAMPLES: MS Word documents, MS Excel spreadsheets, pictures, sounds rvg
  19. 19. HYPERLINKUSE: Field that will store hyperlinks. A hyperlink can be a UNC path or a URL.SIZE: Up to 64,000 charactersEXAMPLES: rvg