what are the steps in database design?
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['Determine the purpose of your database. ... ', 'Find and organize the information required. ... ', 'Divide the information into tables. ... ', 'Turn information items into columns. ... ', 'Specify primary keys. ... ', 'Set up the table relationships. ... ', 'Refine your design. ... ', 'Apply the normalization rules.']
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Definition of schema: Design of a database is called the schema. Schema is of three types: Physical schema, logical schema and view schema. ... The design of a database at physical level is called physical schema, how the data stored in blocks of storage is described at this level.
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['Data Dictionary Management. ... ', 'Data Storage Management. ... ', 'Data transformation and presentation. ... ', 'Security Management. ... ', 'Multi User Access Control. ... ', 'Backup and Recovery Management. ... ', 'Data Integrity Management. ... ', 'Database Access Languages and Application Programming Interfaces.']
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['Hierarchical database model.', 'Relational model.', 'Network model.', 'Object-oriented database model.', 'Entity-relationship model.', 'Document model.', 'Entity-attribute-value model.', 'Star schema.']
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A relational database stores and organizes data points that are related to one another. Based on the relational database model, a relational database presents data sets as a collection of tables and provides relational operators to manipulate the data in tabular form.
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['Table – Basic unit of storage; composed rows and columns.', 'View – Logically represents subsets of data from one or more tables.', 'Sequence – Generates primary key values.', 'Index – Improves the performance of some queries.']
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['Provides security and removes redundancy.', 'Self-describing nature of a database system.', 'Insulation between programs and data abstraction.', 'Support of multiple views of the data.', 'Sharing of data and multiuser transaction processing.']
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["Joins. Not all of the data you need to work with will always be in one table; in fact, most often it won't be. ... ", 'Subqueries. ... ', 'How Indexes work. ... ', 'Gain a working knowledge of PHP. ... ', 'How to work with popular database systems.']
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['Step 1: Identify your objectives. ... ', 'Step 2: Create a project database. ... ', 'Step 3: Analyze the data. ... ', 'Step 4: Present the results. ... ', 'Step 1: Identify the project objectives. ... ', 'Step 2: Create the project database. ... ', 'Step 3: Analyze the data. ... ', 'Step 4: Present the results.']
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['What is the Purpose of the Database? First and foremost, you must decide what the purpose of your database is. ... ', 'Who will be Using the Database? Another important consideration is who will be using the database. ... ', 'What is the Database Replacing or Improving? ... ', 'Do You Need to Move Data from Excel?']
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['Enter a name on the initial screen of the Logical Database Builder and choose Create.', 'A dialog box appears. Enter a short text. ... ', 'Once you have entered the short text, you must define the root node of the logical database. Enter the node name and its attributes.']
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A relational database stores data in tables. Tables are organized into columns, and each column stores one type of data (integer, real number, character strings, date, …). The data for a single “instance” of a table is stored as a row.
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Database Development Life Cycle. The Database Life Cycle (DBLC) contains six phases, as shown in the following Figure: database initial study, database design, implementation and loading, testing and evaluation, operation, and maintenance and evolution.
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['Launch Query Design View. Click Query Design from the Create tab in the Ribbon.', 'Select the Tables. Select each table that you need in the query and click Add to add it to the query. ... ', 'Add Fields. We are now in Design View. ... ', 'Enter Criteria. ... ', 'Run the Query. ... ', 'The Result.']
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['Maintains database by entering new and updated customer and account information.', 'Prepares source data for computer entry by compiling and sorting information.', 'Establishes entry priorities.', 'Processes customer and account source documents by reviewing data for deficiencies.']
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A Database Management System (DBMS) is software designed to store, retrieve, define, and manage data in a database.
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['hierarchical database systems.', 'network database systems.', 'object-oriented database systems.']