Database table diagram tool
The Database Designer is a visual tool that allows you to design and visualize a database to which you are connected. When designing a database, you can use Database Designer to create, edit, or delete tables, columns, keys, indexes, relationships, and constraints. To visualize a database, you can create one or more diagrams illustrating some or all of the tables, columns, keys, and relationships in it.
For any database, you can create as many database diagrams as you like; each database table can appear on any number of diagrams. Thus, you can create different diagrams to visualize different portions of the database, or to accentuate different aspects of the design. For example, you can create a large diagram showing all tables and columns, and you can create a smaller diagram showing all tables without showing the columns.
Each database diagram you create is stored in the associated database.
Within a database diagram, each table can appear with three distinct features: a title bar, a row selector, and a set of property columns.
Title Bar The title bar shows the name of the table
If you have modified a table and have not yet saved it, an asterisk (*) appears at the end of the table name to indicate unsaved changes. For information about saving modified tables and diagrams, see
Row Selector You can click the row selector to select a database column in the table. The row selector displays a key symbol if the column is in the table's primary key. For information about primary keys, see .
Property Columns The set of property columns is visible only in the certain views of your table. You can view a table in any of five different views to help you manage the size and layout of your diagram.
For more information about table views, see .
Within a database diagram, each relationship can appear with three distinct features: endpoints, a line style, and related tables.
Endpoints The endpoints of the line indicate whether the relationship is one-to-one or one-to-many. If a relationship has a key at one endpoint and a figure-eight at the other, it is a one-to-many relationship. If a relationship has a key at each endpoint, it is a one-to-one relationship.
Line Style The line itself (not its endpoints) indicates whether the Database Management System (DBMS) enforces referential integrity for the relationship when new data is added to the foreign-key table. If the line appears solid, the DBMS enforces referential integrity for the relationship when rows are added or modified in the foreign-key table. If the line appears dotted, the DBMS does not enforce referential integrity for the relationship when rows are added or modified in the foreign-key table.
Related Tables The relationship line indicates that a foreign-key relationship exists between one table and another. For a one-to-many relationship, the foreign-key table is the table near the line's figure-eight symbol. If both endpoints of the line attach to the same table, the relationship is a reflexive relationship. For more information, see .why london business school where business meets fashion how much solution to use in vax platinum how much london tube cost how many project managers are there in the us product where name when starting up a business whose methodology of teaching experimentation is the key note of whom company why project planning is important how far technology has come how much equipment has lost who development goals when solution is saturated what project is stitch roadmap when do shops open when system restore doesn't work where's the london eye how design makes the world when engineering and administrative controls where to buy engineering paper who manufactures genesis cars how much workers comp will i get who solution for diarrhea who should be ceo of startup whose forest solution where to find system configuration where is my product from which development changes are associated with puberty who solution focused brief therapy where to put technical skills on resume how much manager in axie what startup companies to invest in when science found god how often business post to instagram where's the london eye where device name how much development length of steel reinforcement how much science diet to feed my dog how much tech savvy are you whose science whose knowledge who technology transfer how much company in tata group where was technology first invented where to teach languages online how long london broil on grill which business degree is right for me jira roadmap which version how much teaching assistants get paid how many system updates on galaxy s10 plus where the london is located how often technology changes which science deals with the motion of projectiles who product list where to find system services on iphone where technology comes from what solutions are there for climate change what science is taught in 9th grade why science is important for students what workers comp pays for how many products does coca cola produce globally where i'm from locations how long startup how many startups make it who product mix who set up instagram what equipment is exclusive to kevesi soldiers who engineer architect whose project is tplex how manufacture cement solution whose ph is above 7 where is workers' compensation reported on 1040 how many teaching days in a school year how startup founders make money why manager need to know about research how many product managers does amazon have why teaching abstinence doesn't work how many company in a battalion where to find advanced roadmap in jira who design washington dc how much engineering colleges in india whose company is google most common technology how many entrepreneurs are in the world how much solution for tb skin test why teaching is a good career when science meets religion when business taxes due 2022 where system preferences on iphone when product patent started in india why business ethics is important what is far in development how much london bus fare how many system of a down albums are there where to download project sekai who manufactures how much solution in contact lens case what engineering pays the most where to produce music who teach you where to teach driving near me which solutions are possible which products contain pfas which solutions does iqbusiness offer maker's mark how many company in a battalion where system preferences mac where engineering was invented what system is the kidney in how much manager salary in india where to manage amazon credit card where from the worker alienation according to marx how much phone insurance where to get technical description of lot where is stonehenge from london how many solutions does this system have how many development region in nepal how products are tested on animals