![]() ![]() Just like Area takeoff, you cannot draw an 'uncloseable' polygon or cross lines. If On-Screen Takeoff generates a 'thunk' sound, that indicates that the segment cannot be drawn or the polygon cannot be closed. Press ESC on your keyboard to back-up to a point where you have not crossed lines or drawn a polygon shape that cannot be 'closed'. Shape Annotations remember their last setting. For example, if you change the color and line width in Bid "A", then open Bid "B", when you select the same Annotation Shape, it is automatically set to the last color/line width you selected.Ĭlick the Callout button, then click on the plan to set the starting point (where the arrow will point) and drag away from this spot to draw the callout box. Then, type in the message and adjust font as needed.Ĭlick the Arrow button, then click on the plan to set the starting point, click again to draw the ending point.Ĭlick the Line button, then click on the plan to set the starting point, click again to draw the ending point.Ĭlick the Rectangle button, then click on the plan to set the starting point, hold down the mouse button and drag to the ending point. Release the mouse button to complete the Annotation.Ĭlick the Oval button, then click on the plan to set the starting point, hold down the mouse button and drag to the ending point. Release the mouse button to complete the Annotation.Ĭlick the Freehand (Polygon) button, then click on the plan to set the starting point, click on each corner (vertice) to set additional points and then double-click to complete the Annotation. Once a Shape is drawn on the plan, you can adjusts its size and position by using the Selection Tool and then adjusting the annotation as needed. There are seven Shapes available for drawing Annotation, click the small downward facing arrow next to the button to select the color and line width for the shape. Defaults may be set under Tools > Options > Fonts and Colors. The Highlighter calls special attention to a section of the Image just like using a Highlighter pen. There are 48 colors you can choose for the Highlighter accessible by clicking the drop down arrow.Ĭlick on the Highlighter tool, then click on the plan and drag diagonally away from the starting point to draw a rectangle - release to finish. ![]() Make adjustments to the text formatting as needed Text annotation creates a note on your image/plan that can call out specific information or alert field staff to special requirements.Ĭlick away from the text box and the Text Format bar opens ![]() The other employees are retained.Dimension lines automatically break at any piece of takeoff they encounter to help you measure the distance between takeoff objects. To draw a line 'over' takeoff objects, draw it on a blank region of the plan (where there is no takeoff) and then just drag it to the location where it needs to be. What does this mean? If the "engineering" department record is removed, then the employees in the group are fired and removed from the employee table. =# DELETE FROM department WHERE dept_name='engineering' INSERT INTO department (dept_name) VALUES ('engineering') INSERT INTO department (dept_name) VALUES ('accounting') Durability: Once a transaction has completed correctly, its effects should remain, and not be reversible (unless another transaction or set of SQL commands purposefully directs a change).ĪLTER TABLE employee ADD FOREIGN KEY(dept_fk) REFERENCES department (IDpk) ON DELETE CASCADE.Isolation: Data being used for one transaction cannot be used by another transaction until the first transaction is complete.Consistency: The database is always in a proper state and not in error.If aborted, the previous operations are rolled back to their former state. Atomicity: The transaction must either all be carried out successfully, or none at all.If a system failure occurs and only one transaction occurs, then the database would be in error and in an inconsistent state. Add $500.00 to the account of Barney Rubble.Subtract $500.00 from the account of Fred Flinstone.The requirement is to support actions such as the following banking account transaction example: This is often referred to as ACID: Atomicity, Consistency, Isolation and Durability. The entire group of SQL instructions must all occur or have none occur at all. ![]() Database transaction support refers to the need to handle a bundle of SQL transactions as a single action. ![]()
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